IWB or OWB?
What position? Appendix? 3:00? 5:00?
From what you're describing, Alien Gear may be what you're looking for.
Not leather but has a modern material backer that many holsters use leather for. You can adjust retention. Base system can be used with different Kydex units to save costs.
The 4.0 IWB Holster is the most comfortable concealment holster. Toolless adjustments, and a modular holster shell. Get yours here...
aliengearholsters.com
Similar to the AG is the StealthGear which seems to be quite popular right now. Again used more modern materials for a backer rather than leather and I believe this has the same system where you can change the Kydex. Also retention is adjustable.
The IWB Standard holster is the original holster for CCW. It's slightly wider platform allows the weight of your weapon to be evenly distributed along the belt.
stealthgearusa.com
My current brand is Crossbreed. Been using them for years and w/ many 1911s. Similar to above but uses leather backer and retention is not very adjustable. Although you can heat up the Kydex and adjust it, just not as easy as the above. I will state that retention on a IWB is not nearly as critical as OWB. Just my opinion. I've been carrying using the Crossbreed holster since 2008. I've tried some other brands and styles but always seem to come back to Crossbreed.
Shop the SuperTuck® holster online at CrossBreed Holsters. Our SuperTuck® IWB holster is the most comfortable IWB holster on the market. Buy your SuperTuck® holster from CrossBreed Holsters today!
www.crossbreedholsters.com
I've ordered a newer Crossbreed that is a hybrid similar to the AG and SG above. Should see it the end of the week. I also ordered an all Kydex single clip appendix carry to try out.
The All New Hybrid ST2 by CrossBreed Holsters is a fusion of our most popular holsters blended together to give you the ultimate in comfort and retention. This Concealed Carry Holster is great for Glock 19 or your Sig P320.
www.crossbreedholsters.com
BraDeC Inside the waistband holsters can be carried in a variety of ways due to the adjustable cant. Carry the BraDeC original Kydex holster strong side, appendix, or anywhere in between and feel confident that your firearm will remain concealed and safe no matter the task at hand. Lifetime...
bradecholsters.com
The Milt Sparks or similar is all leather and many people are extremely happy with them. My Galco clone didn't thrill me.
Milt Sparks Holsters, Milt Sparks Leather, Milt Sparks, Gunleather, Concealment holsters, Concealment, sparks, holsters, gun holsters, gunbelts and more. Inside the waistband products.
www.miltsparks.com
Many clones for cheaper but I'd stick to the Milt Sparks unless you can't find one and want to try it out. That's what happened to me.