I was planning on picking up one of these:
http://www.computercasesandcables.com/ccc/105-0060and wiring R, G, B, Sync, Ground, and Controller Ground through the switch to the monitor/CP.
I don't really care if i have two games running at the same time, i don't want to run power through it, unless i do it through a relay. I have a sneaky suspicion that the switch would burn out if i sent that power through it.
Has anyone tried this? I'm a little too cheap for multijamma, especially in a dedicated arkanoid cabinet..