That being said, if you go just one inch larger on the waist you should be able to fit any gun you want to IWB. You could do that without your clothes getting too baggy on you. Also, you can investigate the various means of carrying under your shirt instead of inside your waistband. Some of our members also carry full sized duty weapons in OWB holsters under an untucked shirt with no problems. And if you really want to keep your shirt tucked in, there are various "tuckable" holsters available.
One thing to remember too is that you are probably paranoid about printing out of proportion to the actual risk of being discovered. It happens to all of us at first. The best advice is to wear it and forget about it. Most people just aren't that perceptive, and even if they are, they aren't looking for indications of a gun on you; so the odds of getting "outed" are fairly low. You'll get used to that after while, and you won't think about it anymore.
You'll know you've arrived when you can stand on stage in church with a guitar in your hands and a gun on your hip in front of several hundred people at a time, and not worry about whether or not anybody notices your gun.
