I have a hard time seeing why not. These are clones in the strictest sense as far as innards go. If you're not sure order from a place with a decent return policy.
They're not real clones. The internal hardware is an emulator.
Not to sidetrack this thread, because it's somewhat related - has anyone used NES or SNES controllers with a USB interface to your PC?
How do they perform vs. the actual controller?
I know many people prefer the actual NES and SNES gamepad, but I think some 3rd party ones exist that look very similar.
I will be doing PC emulation of NES/SNES games shortly so I'd like to use the actual gamepads.
ELmO
Hopefully the projector itself doesn't add lag. You may want to check out some response time test websites and compare your times against what you can get on a computer with known good response. I don't know if there's generally a problem here or not, I'd just be concerned since projectors aren't usually used in latency sensitive applications.
At this point, short of hauling out an old CRT, it might be more advisable to use a highly accurate emulator like BSNES instead.