MJ - We used Summitpost as our general source of information as it provides the best trail description I could find.
Unfortunately, we did not make our attempt on the West Face due to a late start and underestimating the effort required to get through the Williamson bowl. Traversing the bowl is not difficult, just tedious and time consuming.
The hike up to Shepherd's pass was straight forward and we only crossed snow a few times above Anvil camp at approx. 10,500 ft. All in all, the trail is a great hike we were just moving too slow to make it up to the summit this trip.
May consider another attempt later in the season.
If you do make an attempt, I would recommend camping at the pass or in the bowl to give yourself ample time. Otherwise, the hike from Anvil camp adds another 2+ miles each way. Good luck.