Great 4th class route! I thought the Gash was unusual in that the best line almost always stayed right on the ridge - the best, solid rock seemed to be right on the crest the whole way.
We carried a rope but never broke it out. We found two rap stations, one to return to the Huerfano-Winchell gap (fairly new) and one to get into the final Gash going up (two pitons, old and faded perlon, we down-climbed around it).
The hardest part of the day was getting off Blanca and back to the Huerfano. We went down the south ridge of Blanca about 7/10 of a mile to a point where there was some shattered red rock on the ridgeline, then headed toward the N Winchell Lake. The descent involved loose, open ledges and a small 3rd class move to a pinnacle (on a line between the lakes), then down a snowy N facing coulior. Finally we hiked around the lake, back to the gap where the Gash started, and on back to the Huerfano trailhead.
... when the rock is dry. Wouldn't want to do it in wet conditions. Plenty of scrambling along the ridge, maybe just a couple of 5.0 moves. Mix of solid and loose rock, decent exposure. Gash itself was anticlimactic IMO.