On the off chance that someone is familiar with both video heads and still camera heads...

I have to buy a new pan and tilt head for my 4x5 because my ballhead is driving me crazy when I try to use it for a bunch of photographs I need to make at close range to the subject. I am also about to buy a 16mm motion picture camera. Both cameras weigh under 10 lbs with lens, and I plan to use them with one tripod (a Gitzo 1325). Is there any reason why I can't buy a high quality video/motion picture camera pan and tilt head and use it with both cameras, instead of buying separate heads for each?