I got to test it out at the kickoff party for the product. GoPro had an entire roller coaster park down near San Jose for a private event all day. So got to go on crazy roller coasters and use it. Stupid fun!
Also, the quality is fine. Not terribly better than the predecessor. 2.7k30? pretty fun to play around with. I'll be having fun with mine, learning the high resolution workflow with it...
Have a nice day, Bluename.