I carry a Glock 23 appendix. In the numerous classes I've taken this way, I haven't been taught, nor do I do as you asked about. As I clear the holster, I rotate my wrist slightly to point the gun away from me as I bring it up to preaentation. One thing to add to your reholstering process, is drop that right leg back a step, then squeeze the cheeks and push the hips forward.
Sitting or bending is no issue with a good holster. This holster came with a different clip for a 1.75" belt, and it was too big for a 1.5" belt. For a week, it rode up, tried to flip out of my pants. It was a headache. This clip came in saturday, and it made a huge difference. I contemplated selling this holster that was not a week old. Granted it took me about 2 weeks of pain and discomfort to get used to it. After that, no pain or issue at all. Sitting, driving, lounging in the couch, bent over putting on shoes. FWIW, I'm 5'8 195lbs. I've lost 30 since Jan 1, but have been carrying appendix at 225 lbs.