The OP wants to carry in
deep concealment in a
non-permissive environment. He defininitely
doesn't want a multipurpose holster that is larger or less comfortable than is absolutely necessary.
While I'm a big fan of Raven holsters, which are very versatile, I definitely wouldn't recommend one in this case; my Raven holsters when worn IWB are decidedly less comfortable than many other options, and
less comfortable means discomfort, touching and adjusting, and - as a consequence - less concealment.
Frankly,
Here is where the OP should be looking
.