Probably not a good idea with the 30S. It's thin slide is bad for the high end stuff as slide velocity, even with the fatter 21 and 30 slides gets so fast that you have to comp it. The 30S is almost 4oz lighter than a 30, which isn't nearly as good fro the Super/Rowland as the 21 is. Plus 30 barrels won't fit a 30S, they are somewhat different. The fat slided 30 is a better platform for doing this.