Don't know anything about John's ankle holster, but I carry my Mdl 19 21/2 in one of his SAP holsters. I have watched John's holster progress from his first post on another forum looking for info and help in getting started.
Lou Alessi jumped in and gave John some guidance, and now his holsters rank right up there with Sparks, Del Fatti and Uncle Lou's (RIP) for quality of workmanship.
I would venture to say that when a Galco has gone totally soft, one of John's holsters will be just getting nicely broke in.