Tim,
I have one in my car. It has never given me a problem in 2 1/2 yrs of service. That being said, I agree with fixit, Way to much work if it fails. Also, the thought of brake fluid spraying all over my clutch WHEN it fails doesn't thrill me. If it pukes it's guts when I'm in the middle of nowhere I'm screwed. I plan on installing a fork and external slave which can be visually monitered for leakage, and be replaced in an hour or so in a parking lot.
Steven
PS, to answer your question, my clutch pedal requires noticably more effort on the first pump of the day. After that, the effort is easy. Why is this? I have no idea. Maybe someone reading this could clue me in.
