My "other hobby" is high powered rocketry.
There is a fella I've met and flown rockets with who markets on-board video equipment to put in rockets to video the flight, very similar to KAP or "KAV"
Here's the website: http://www.boostervision.com/boostervision/default.asp
At the Airwaves festival in Cincinnati, OH this past April, a fella on the flight line near me was also a rocketeer and was flying with a booster vision camera on a Gomberg Falcon delta. He was not a KAP'er and didn't have a picavet or any type of stabilizaiton system (it was just dangling from the line in front of the keel and tow point) but he did have the downlink system set up and we we could watch the live video feed from the camera right there on his laptop. Totally cool.
I believe they are set up to record video and download later with the live downlink being an added cost option. They can certainly take a lot of abuse and shock load (the forces realized by the onboard equipment in a high powered rocket application are *significantly* higher than those that a kite would apply, even if you crashed your kite
Art Upton, the owner of Booster Vision, is a great guy and when I take a break from spending my kite dollars on other things I am definitely going to get some of his equipment (and I'll use it in my rockets too)
Here's a direct link to the page with videos taken by his equipment in rocket launches, RC cars, and RC aircraft. The ones near the top are taken on high thrust, high altitude, high powered rockets.http://www.boostervision.com/boostervision/video.asp
I'm tellin' ya', this stuff would be *excellent* for taking video with a kite.