I have used a Bianchi shoulder holster for carrying a full sized 45 for the last 30 or a bit more years, and also in a Bianchi belt holster, so I can attest to their durability. Rosen and Sparks are also great if you want a leather holster, and I've also done well with Galco leather for compact 9mms and can't see any reason why the version for a full sized 45 wouldn't work as well. I also have a few of the cheap fabric holsters (mostly Uncle Mike's), and I have to say that they have done fine for the uses for which they were purchased.