Sure, but this takes the weight off your back where it really belongs and puts it on your belt, taking away from the great trim characteristics of a SS plate. Most people wearing any sort of wetsuit will need a few pounds in pockets or on a belt anyway. The real reason for an alum plate IMO is to use with heavy steel tanks, where there's already alot of weight on your back. Ideally you'd want weight and buoyancy sources to be as close together as possible, right near your lungs; this way small changes in buoyancy affect trim less.
It probably doesn't make much of a difference...but what the hell, if I can't go diving today, might as well spend sometime arguing about diving!