has anyone ever lost one from the mounting velcro? do you use a recovery lanyard of some sort? [...]
There is velcro and velcro. The positive lock on that velcro is incredible and I've never had any device move once stuck in place. I use a lanyard on all the devices if there is a spot to attach one anyway, aka on all but the prostart.
The prostart has its own support that can be screwed in and the devices clips in it. It's fairly solid but a line can get wrapped around the release...
