Let me jump in on this one...
I own both the ARG and the CQC (not S).
In terms of most versatility for CONCEALED
carry, the ARG would probably win since
its IWB and will allow you to conceal
under even a light shirt.
That said, I really like both, but for
different reasons. My CQC rides high and
close. I consider it an outstanding
design for an OWB holster. In fact, if I
had to choose one design for all my OWB
concealed carry needs I would likely go
with Lou's CQC.
The ARG is,hands down, the most comfortable
IWB I've ever used. While I personally
don't like the extra "stuff" inside my
trousers, the ARG is as close to comfor-
table as I've ever used.