I've been working on the low traverse since I've started rock climbing. I've "almost" sent it of course. According to some guidebooks it's V9, to merril bitter it's 5.13. The quartzite is of the highest quality in the canyon, however the location is pretty awful. If you were to take a wild fall early on the traverse, you might step back into the road.
A few times fire trucks have honked at me, and subsequently scared the crap out of me. I'm not sure if they're worried about the vicinity, or if they just like to see me jump.
The full traverse is about 55' long, roughly 50 moves to my beta. The first 20 feet is probably 5.10 to a corner, where the hard moves sustain ever increasing difficulty until the crux final 5 feet, of which I've never linked. My main problem is pumping out.
To me, the climb is really 3 sections, the first 15 moves of jugs end in a corner, then the bulk of climbing through a diagonal cack leads to another shallow corner, where a final push on pinches and bad sidepulls reach the arete and end. Have at it!