Crossbreed or something similar. Something with adjustable cant will be very heppfull in carrying a gun with a full length grip. I need at least a button down shirt to conceal a full size pistol but that is just me.
Well if you are carrying iwb, you might want to try to get the gun as deep into your waistband as possible. This might keep the grip closer to you. The crossbreed allows you to adjust the height. Also, if you don't have a good gun belt, you might look into one. They can make a huge difference.
I have but I need one that passes as a casual belt. Most gun belts I see are like para military looking
If you have a little disposable income, most gun leather companies make "dress belts" that are thick, high quality leather but cost as much as a holster. Any rigid multi layer belt will help even if it isn't marketed as a "gun belt"