I was considering using 1 player X-Arcade controllers for my next cocktail cabinet.  One solo controller for each side.  But I was thinking about using a 2 player X-arcade on each side so that Total Carnage, Smash TV and others could be played.
My question : Has anyone ever used 2 dual X-Arcades on the same machine?  Could it be done?  
If not, how about a 2 player X-Arcade on one side of the cab and a solo X-Arcade on the other?  Any conflicts or problems with this?
Thanks.