Re: Pretentious music??
Hercules yes, KC were (and are) the most self-consciously arty of prog bands. Bob Fripp's interviews are compulsory listening for fans of self-appointed visionaries :)
Mike Giles didn't quit drumming, he's just locked in a time warp and playing in the 21st Century Schizoid Band with his brother on bass. Check them out on YouTube. He plays the snare a lot and when the recording sound isn't good his playing clatters too much for my ear. When the sound is good, as per those studio albums ... brilliant.
Loved his playing on thos first two KC albums. His playing on Cat Food (a wonderfully pretentious track :) has some of my fave drumming sounds and dynamics ever.