Greenhorns in Velvet 

At 5.7 (as of Bechtel 2011) you'd think this would be a great lead for beginners in the OK Corral. You'd be wrong. Don't get me wrong, it's a fun climb, but the beginning leader may want to look elsewhere and wander back when regularly climbing harder stuff.

The start can be a little vexing. Easier climbing gets you to the third bolt and then it's delicate face climbing for a few moves before easier terrain sets in. By delicate face climbing I man thin (but plentiful) holds and anonymous, small smears for the feet. I suppose there might be some beta that makes a 5.7 rating more reasonable, but in my opinion a 5.7 should be, by definition, fairly obvious after a few attempts.

The climber in search of 7-8 leads will probably want to head over to La Vaca Peligrosa (5.8) for a better grouping of moderates. While shorter and not as nice as Greenhorns, Slave (8) and R is for Redneck (7) are more accessible to the beginning leader and a good warm-up for the very nice La Vaca.

I think it's the slab that gets you. Non-steep routes like this can be both technically and psychologically challenging for a beginning leader. The features thin out and a fall comes with the threat of hitting the rock. Still, this route felt like 5.7 slab to me. But it could get harder in the future as the features polish-up.