Had it on the range yesterday to shoot our qual, then worked a bunch of one, two, three-shot draws on a plate rack.
No apparent issue with hip movement. The first few strings on our qual are standing to kneeling. Because of injuries, my compensation is to shoot strong knee up (reversed) as often as possible. No issues doing that. I'll see about other concerns come mid-week.
Given the frequency of seeing odd stoppages on BWC footage that are difficult, if not downright impossible, to re-create on the range I "think" (yeah, I know) that a bigger benefit to this may well be how it aids in establishing a correct grip/wrist angle from the git go.