Guys, you don't want to have one of these clips attached anywhere on your setup. The guy described at the link below had another type of soft connector attached to his leg strap, it destroyed his kite. If the winds hadn't been sideshore he would have been dragged up the beach instead of way downwind. Locking carabiners cost about $20.
http://fksa.org/viewtopic.php?t=670
Double clamps have been known to release kites on occasion even though there were closed.