I think it's more difficult west to east, even though the initial climb is a little shorter. It's very steep and rocky and tough. I took out a friend on this trail who wasn't very used to rocky and steep climbs, he ended up getting pretty frustrated and walking alot. If you aren't nearly an expert, be prepared for some walking. The climb from east to west isn't as hard, but i like prefer taking that as the downhill, its more open than the west side.
Views are great too.
Take some time on the climbs to absorb the great views, i believe the top of the trail is the highest point in the kokopelli trail system, according the Over the edge bike shop, linked to above. Fun, Moore fun.