Sweeping cross draw, especially off hand is terrible.For amusement value I tried this last evening, drawing left handed. It went poorly. Appendix carry cross draw was smoother but damn that's an uncomfortable way to carry.
My point was most meant for getting it out of the holster and at least get a bent elbow (retention) shot off.
Going to retention from a cross draw is not very feasible.
The whole point is to not try and make everyone good doing it, but to show your vulnerabilities and to adjust yourself accordingly.
Better to think of it now than at the last minute.