Well, we just climbed Granite, so I can respond to my own post.
We tried the Huckleberry Creek route to Avalanche Lake route the first day. I second the comment about rocky. You are hiking on boulder fields for miles, very slow. It rained on day 2 so we wound up just scrambling on the boulders up to Froze-to-death Plateau where we would camp for a summit shot on day 3. Day 3 we had a near flawless, sunny day to summit. The snowbridge was almost non-existent on July 25. Enjoyed the class 4+ climbing at the top approach. We were certainly more comfortable with our protection and rope, and happy to rappel on the way down. Many nicely placed rap stations left behing to help you.
This definitely has the most challenging rock climbing of the 50 state highpoints.
We hiked back via FTD Plateau and finally found the trail down.
All in all, I'd recommend the Froze-to-death approach both ways and just hope for good weather.