We tried this route last weekend based on the recommendation of new guidebook. It takes the line just left of Topaz. The first 30 feet are awkward trad and then very thin face climbing past several (7?) bolts lead to a belay just left of Topaz first anchor. Having done several 10 and 11a routes earlier we felt the 10b rating was pretty conservative - more like 10+. Harder than Black Wave for sure (11a). Other thoughts? An excellent outing though a bit lichenified. We rapped this pitch due to time constraints but would have chosen to finish on Topaz.
Location
Located just left of Topaz slab. Start is small, broken corner. Look for a rightward-trending line of bolts about 40 feet up.