just my $0.02 but ankle carry is the worst method ever devised. if you need to draw your gun, you are in a prone, stationary position, vulnerable from every direction.
get any decent pocket holster, try it yourself and see how you like it. the j frame centennial is the perfect pocket carry piece.
. . . . and a .22, .25,.32, .380,etc. is useless for a self defense gun . . . unless that's all you can adequately conceal/carry or all you have with you at the moment when you really need something.
Like everything else, an ankle rig is a compromise between the "best" way to carry and "what you can reliably get by with". Depending on where you travel in your daily routine, how your job dictates your attire, how much you're in a vehicle, how your attire varies with the weather conditions, blah, blah, blah . . .
If I don't agree with what someone else carries or how they carry it - I simply don't make it a practice to do it myself. I do what works
for me. I love the Centennial style Smiths, own several, and carry one more often than anything else. I've tried a pocket holster and it's useless -
for me. But I would not say something to you to the effect of "a pocket holster is absolutely useless since they don't fit my pants and it prints too much and I can't make a smooth draw with one."
There are dozens if ideas/products introduced every week and some gain a handful of folks who like the idea but they never catch on in general. They die in the market place to become an oddity or a collectible on the table of some gun show 20 years down the road. Ankle holsters are used by enough people and made in enough different versions that I think the concept has been proven valid -
for those who like them and use them.
YMMV