I set up my KP with the PLM, a Swivi eyepiece, and a camera-powered external Rode mic with deadcat to shoot some footage at the local airshow. However, at the last minute I used the K-70 instead so that I could use the KP for stills. I found that video takes up all available time, leaving essentially none for photos- not sure what I was thinking
Anyway, I can't say I'd recommend it. I knew it would be hard, with no SR and manual focusing and the wonky DSLR video setup in general, but it seems somewhat beyond my capabilities. However, I did get several OK clips, and the sound is awesome!