Joe, at least in the Swain guidebook, it climbs up this overhang. I did it once ages ago, and it's not that difficult, but it's committing over a ledge. Since then, I've always bypassed this on the face to the right, which is cruiser.
Yesterday I climbed the seam on the left as an experiment and test of my memory. I remembered it as not being so bad. The initial slab is super easy. Then above the ledge once you are on the wall there are good holds for hands and feet but it is (a) awkward to gain the corner, and (b) impossible to protect. Probably a little harder than 5.6 coming in from the left. BTW Williams grades the first pitch as 5.6, not 5.5.
I guess I misread the grey Williams: "P1: 5.6 PG Scramble to ledge, Then up flakes (crux) and corner to the GT Ledge. (130ft)" I guess this is why it felt so super easy on lead ^^ P2 was much more comitting even as 2nd