I began carrying my 642 with a clip draw. It worked fine in the appendix position.
I then started carrying it at about 3:30/4 o clock position. I was at a customer's house and bent over to grab something from the floor of my truck and my weapon fell out of my waist band. Fortunately I was wearing a sweatshirt and it got stuck there. I was able to slyly sneak it underneath the seat, close the door, and remain speaking with my customer un noticed. We all know how this could have turned out...
The clip draw easily works out (for me) with the motion of my hip bone gyrating during movements, especially bending.
I will not even sell mine because I view it as a safety hazard. Get a holster with good retention.