As a former Law Enforcement firearms instructor I always taught my students to shoot what feels comfortable. The Weaver Stance was heavily pushed in training while the Isosceles stance was mentioned. I remember teaching a student that shot a pistol right handed but sho a long gun left handed. This student shot very well. My theory is "if it's not broke, dont fix it." I am NOT a Steven Segal fan but I have heard that he is a very good shooter with a 1911 pistol. His stance is more of a martial arts tyle stance and he holds a pistol similar to holding a samuria sword. I personally use a combination of Weaver and Isosceles. I have no idea what its called but it was taught to me during a training by a Special Forces group in 1994. It worked well for me and I still use it.
When I taught new shooters, I would demonstrate each shooting stance and have them try each one. Then I let them choose which was best for them.
I also hunt with a bow and am aware of the elbow placement you are talking about. I do the same when shooting a long gun. I would advise a shooter that does this, if it works for you, leave it alone but be aware that tactically you may be exposing your elbow while shooting from behind cover.