Guess waht I got for my brithday! A friend bought me a Mayflash Dolphinbar! (Thanks, Jel! <3)
I tried it for a bit, and it was pretty much plug and play. Set it to mode 2 (but I ended up not plugging the nunchuck after all), and all games worked like a charm: Star Wars Trilogy was pretty fun (and you can use de D-pad on the wiimote for the duels!), so was The Ocean Hunter, and The Lost World became a much more engaging experience than just playing it with a mouse.
I then tried it with Model 2 emu 1.1 and my personal favourite: Virtua Cop 2, and it was working great as well! Also tried it with the House of the Dead, so satisfying, man...
It also worked perfectly in MAME with games such as Area 51 or Lethal Enforcers. For Jurassic Park and Alien 3 The Gun I had to tinker with the settings a bit (those games used analog guns)
I didn't run into any issues with the thing itself, it already came with the newest firmware in it, left click was mapped to the trigger and right click to A button (at least in mode 2), so I had no issues playing Virtua Cop. (But keep in mind that I didn't remap anything, so even for model 3 I was putting credits and pressing player 1 start with my wireless keyboard on my lap. Shouldn't be an issue to map those to buttons 1 & 2, though.
While on windows, the cursor gets a little jittery (so you still need the mouse to navigate), but not that much: I expected it to be more jumpy, like the cursor on the original wii menu with the last update, which removed cursor smoothing, but the dolphinbar was pretty stable overall and the jitter was not noticeable at all while playing, you'll never have a sense of lack of precission, and I was turning zombie heads into pulp effortlessly in HOTD.
The bar itself makes it feels like turning all the lightgun, mouse based games in your PC into wii, HD versions of the titles (and makes me wonder why didn't Sega go big time and release them all lightgun games on the wii. I can understand in the case of license based games, but a physical release of Virtua Cop 1 & 2, The Ocean Hunter, and the very first House of the Dead would have been great to have, as they are a blast to play with a wiimote.
I haven't tried Rambo: The Videogame with it yet (I'd have to re-install it, might do later), so I don't know if it'll work with it (though I'm guessing it will, as it is a pointer based game. BTW, such a pity that everybody hates the game, I think it's a veeery funny lightgun game! I had a blast with it!).
The bar doesn't work with fps games (I didn't even try, but those games use a relative coordinates system rather than an absolute one, otherwise how are you going to take a 360 degree turn?. Also, I know from a dolphin blog article that in those games the camera kinda enters "party hard" mode).
I also haven't tried it with the PC versions of THOTD 2, 3 or Overkill. I have 2 and 3 for the wii, so while the PC version of 3 gets better framerate and resolution, I'd still have to install it and feels like a hassle compared to just popping the disk in the console, and the PC version of THOTD2 has more Z-fighting issues than the wii one with no gain in resolution. Overkill (the typing of the dead overkill has the light gun game in it from the get go as a bonus), while being like the ps3 version with the better graphics, well, I think people were too mesmerized by the extended use of the word "fuck" to realize it's not an actually fun or engaging game: I think the enemies lack variety, and they all line up in the center of the screen more often than not, so it gets boring pretty quickly, both in Wii and PC, so I don't think I'll be re-installing it anytime soon, but I might, later on, to check if it works.
I haven't tried it with other emulators just yet, but might try the point-blank series in a psx emu, and I have already used a mouse to play lightgun games in pcsx2 in the past, so it should work just fine (although my PC is too slow and I remember Vampire Night ran like molasses in it).
I tried it for it's original intent with Dolphin 3.5 (sorry, can't run the latest versions, both because of using an x86 OS and because I'm pretty positive it would run slow as hell), with New Super Mario Bros Wii (SM Galaxy runs too slow in my PC), and once set to mode 4, the emulator recognized it no problem: even the tilting worked great, it was like playing on an actual wii. But I don't think I'll be using it much for that purpose, rather than light gun games.
Overall, a funny piece of hardware, and very recommended if you like playing the Lost World a lot.