Traverse was clear of snow in all the areas that matter. The hike through the basin back to the trailhead was a long slog: unavoidable snow at treeline and the basin was mushy marsh. It was impossible to cross without getting my shoes completely drenched (I even lost one in the muck at one point). I would compare the loose rock on the traverse as being similar to the rock on the Hagerman/Snowmass traverse: very, very loose, large, and ready to fall. Keep your group size small and trust your partners for this one. I didn't use traction on the descent from the ridge but was down into the basin before 10:30am.
Ah man, I didn't think the rock on this traverse was too bad! It was definitely loose but compared to some of the volcanic trash in other areas this stuff was great. Maybe I'll have to give that Hagerman/Snowmass traverse a go.