I have a Glock 19 MOS with an RMR. It has tall backup sights. I also plan to do the same with a Glock 34. I am looking for holsters for 1) Concealed Carry and 2) Competition. I saw the Blackhawk Omnivore but I'm not a fan of having to attach something to my rail. Just a preference. So I think that's out. Plus, it's quite big and it doesn't seem like a fast draw. What holsters do you recommend?