FWIW, I dive dry with one of Tobin's plates and the 8.1 pound weight plates.
Using a steel OMS 98, I weight myself as follows:
8 pounds on a weight belt.
Then, 8 pounds on the cam bands in XS Scuba pockets, I flipped one of the cam bands so that each of the pockets are on different sides, then put 5 pounds on the left and 3 on the right. With my Salvo, this trims me out fairly nicely.
All told (plate and weights and light), diving dry, with a 300g undergarment and a cordora suit, I am at about 31-32 pounds (depending on what the light is). Seems to work just about right, it may go down by a pound or so, and I'll have to adjust as the waistline gets slimmer (I'm 6'1" and 220 right now, but dropping . . . )
Bottom line, with these XS scuba pockets, you can move things around from your cam bands and your belt, so if you are diving dry and have 22 pounds of weight, I'd go with the plates from Tobin now. You'll get down to 14 pounds, then you can play around between the ACB pockets and maybe pick up some pockets to put on your cam bands depending on how you trim out.