If you are wearing heavy body armor, it pushes anything on your belt out or covers the belt. So the thigh is the way to go
I liked a drop leg holster for all the reasons mentioned, but when I was on the FOB the pistol went into a shoulder holster. It was much more convenient. Anybody ever had to take a crap while wearing a drop leg holster? It's impossible without removing the holster from your belt completely.
seeing as nobody seems to make a decent just-below-waistlevel holsters.
Thigh holsters are for the wannabes trying to impress the never-beens.