Re: Awkwardness while concealing while driving
You will get used to the feeling after a while, especially if you carry same holster same piece for several months/years.
I have (2) glock 23s and a S&W 37 for ccw.
The Glock 23s get carried in milt sparks summer holster when wearing belt, or safariland iwb when not.
The model 37 I wear when on shorts and tshirt days.
Find a holster you can wear 24/7 comfortable, then get (2) of them.
Even the best holsters will wear down, sometimes this is good for comfort, not so good for containment.
I like leather for IWB or CCW belt style, some gus do run kydex for IWB, i find comfort suffers along with pistol wear, even on my glocks.
If you are in environment where light jackets are the norm, you cant beat a shoulder holster for driving comfort.
good luck.