Wishing I could carry at work...
I have a Comp Tac CTAC that is tuckable, pretty much makes my XD disappear.
My buddy uses an ankle holster for his Glock. The thing he really likes about it is that no one looks at your ankle. It's soooo far below eye level.
One thing about tucking a holstered gun is that it is kinda slow to access it. I get tall shirts so they stay tucked in better, but it makes it real tough to get to your gun. Honestly, you may not have the firepower with a pocket gun, but at least I can deploy a pocket gun much faster then a tucked holster. Plus, with the size of some new smart phones a gun in a pocket holster would not be as noticible as a bulge in the small of your back or on your hip.