I know you're an expert, but for carrying in a suit - G19 isn't an option. This R9 has been zero maintenance, so not sure of your expert Internet regurgitation about that. Carry what's best for you - I'll do the same.
You keep mentioning price, that's not a concern for me. I'll happily pay for a hand built piece of art that doubles as the worlds smallest 9mm. If I need more than 7 rounds of 9mm, I'm screwed anyway...
Enjoy your Glock.
If you put forth some effort you can carry any full size handgun in a suit. Shoulder rig, appendix, SOB all work perfect with a suit, and allow you to carry an actual fighting gun. Or you could be lazy and utilize the worst method of carry. The R9 will follow the same path as all mouse guns. They won't hold up to actual use if you actually use it.