Good tension actuation button placement trumps a pedal in my book.
The only time you save is not having to reach over and dis-engage it the tension head. BUT, that assumes that the string will come out of the gripper without you having to put your hand near it.
Michael A. -- If your flaw in stringing is consistency, http://www.youtube.com/yulitle
MRT 07-08 -- your stringing will be consistently flawed.