I would suggest trying a belly band holster for there "tuckability", buy longer tee shirts, and tuck them in over the gun. This prevents the but from getting exposed and created a "balloon effect" at the waistline which obscures the gun.
I've personally been carrying a gun every day for 17 years and discovered the BB 5 hears ago. I'm not large, 70" and 190, and this method combined with my Kahr PM 9 provides complete concealment and quick access under the lightest of shirts.
They allow limitless flexibility for "gun location" because it's strapped around your hips...not to your pants. Just stap the whole rig around your hip on to of your skivvies, pull up pants, tuck your shirt, belt up your drawers are your good to go. A quick rip at your **** tail and your gun is right where you left it...works tucked or untucked as well.
...oh, and it also eliminates the need to handle your gun in public rest rooms should nature call for a class 2 download...just tug the whole rig up a bit and take care of business while your EDC stays securely strapped to you. No more wondering where to balance your gun to keep it from skidding across the tile floor.
15 to 20 bucks to boot. Good luck