I had a unfortunate incident occur a few days ago, using my Pantin with the optional Catch clip. Seems I got a bit too excited, using my new Croll, a Camp right hand ascender, the Pantin and the Haas and ascended a bit higher than I should have. I was climbing solo, connected securely and ascending very smoothly, when I realized, I should have practiced a few low and slow change-overs, switching to a Rig to descend and/or maneuver. Sadly, after I disconnected from the Croll and foot/knee ascenders, and after threading the Rig on my harness's side D ring, I reconnected my Pantin, stepped up unweighted my self from the hand ascender and onto the Rig, only to suddenly realize I hadn't moved the threaded Rig onto my floating bridge's o-ring. The result was that my Pantin slid up the line, leaving no room for me to unweight the Pantin and remove it from the climbing line. The Rig turned me sideways and had no where to go accept into the Pantin I had locked into. I was left hanging below my waist connection with my right foot stuck at eye level. I couldn't remove the Pantin or the foot strap, so I finally had to cut off the foot strap to the Pantin while mid-line, but only after I was able to regain a stable footing after what felt like an exhausting ordeal. Luckily my wife was in the vicinity and I was still low enough to reach a ladder which she leaned up against the tree to facilitate my self-rescue.
For the record, I had a cell phone handy, along with my rape whistle, so I never felt I was in mortal danger, but the experience was extremely humbling. I also had a basal tie in, using a Rescue8, for a ground rescue option, which my wife temporarily knows nothing about. As such, I now see the wisdom of not installing Pantin's optional "Catch", as it can be a bear to remove in accidental situations like this. Furthermore, I see the wisdom of practicing low and slow, ingraining these switch-over maneuvers into muscle memory, as well as practicing foot grab, the kick out maneuver and practice to avoid stupid mistakes like this in the future.