I agree that this is a stout 5.9! While it does protect very well, care must be taken to place gear so that it doesn't get in your way. There is a distinct crux about halfway up, although the whole climb is fairly strenuous.
Don't let the previous comments scare you off from doing this route. The bottom part of the climb before you get in the crack is perfectly protectable. I think I put a #4 Camalot in as my first or second piece pretty close to the bottom. After that, the largest piece you will need is a #3 Camalot.
The crack is splitter and takes good pro. This is a must do for all crack lovers.