I have the UVC too but the Viletim wins hands down in picture quality 15Khz.
This adapter is made from Viletims Scart to Jamma plus two padhacked PSX pads.
Then to get controllers from each console i bought control adapters from Tototek and others.
(The loose cords are for my WIP kick-harness.)
Consoles tested:
Xbox 360 (Had some minor errors with the control adapter but got it to work great in the end.)
PS2
Megadrive
Snes (My Snes has a Jap scart and it works great in the Jap scart slot on Viletims adapter.)
Neo Geo AES
Dreamcast
Have not tested PS3 and PSX yet (Nor Saturn) but I am pretty sure they will work.
On the pic you can also see the X360 adapter and Megadrive adapter:

Here the X360 plus adapter is inside the cab, nice and tidy:

Here is a comparision between UVC and Viletims in 15Khz. (Mushi Futari X360)
The camera is bad and the difference is bigger in reality, Viletims looks fantastic and sharp:

Ketsui X360
