Well, I did get a Remora, and realized pretty quick that it can be _carried_ (I.e. Walked with) but no way can I _drive_ with it without completely screwing up my back. Does seem good for a quick grab&go, but too thick for long carry.
So, I finally decided to listen to all of those telling me that hybrids are the most comfortable type, and ordered Galko King Tuk (only picked it over a Supertuck because it was immediately available on Amazon Prime, and by all accounts not any worse).
I can now say that my quest is over, at least for a while, it's super comfortable, concealable, I can drive with it, sit with it, It works at 3:00, it works at 4:30 (where no other holster I tried would hold grip close enough to the body), it's not as easy to take off and put on without undoing my pants, but the comfort and conceal ability are unmatched by any other holster I tried.
As a bonus, it also works with G17.
I am sure that Crossbreed or Alien Gear would work just as well. I am now a firm believer in hybrid holsters.