I'd suggest that if you have any "speed-steel" events near your area, that you visit a couple, if only to see what the top contenders are using for a base pistol and then, if they have any gizmo's bolted onto their rig.
That will give you a more finite idea from what those folks learned.
Just about every town up here has a gun club of their own. For those that do hold steel challenge shoots, one can observe just about any brand of semi-auto .22 Long Rifle pistol that's ever been offered.
Many of these folks who "shoot what they brung" do right well at the job at hand. Distances are not that far, and I sometimes wonder if sights are even needed.
This thing is a thumb saver and would definitely help loading mags between stages. Might be cheaper options out there but I picked one of these up awhile back and it is definitely nice when I take my 22/45 out to plink.