Crowds? I've been maybe 3 or 4 times, often briefly, and there has always been 2 or 3 other parties there. But at a rock as big and packed with routes as Tollhouse, that's nothin'. There are more climbers than you'd think in Fresno and the rest of the Valley. Maybe some on this site will chime in eventually...
I've experienced some graininess there, but was mostly impressed with the rock quality and good friction.