I started up it with two very experienced friends BITD. Got a late start ("so which climb shall we do today?" fiasco), route finding problems, got benighted on P7. Stuck ropes on 2 rappels. Walked back into C4 at midnight. In February.
It's STILL on my tick list.
We did The Flakes a few weeks ago, and i was mostly inspired to do it because I had seen this thread a while back, so I thought i'd bump it again.
Great climb, pretty solid and clean overall I thought, but also full-on for 5.8. Too much bouldering and not enough trad climbing had made my legs weak. Lots of sewing machine leg while standing runout on sloping footholds trying to get in some small wires, but I guess I've always felt like a noob on Middle Cathedral rock. It's got plenty of scary Type 2 fun, but it's also got a lot of awesome "hero" climbing on steep juggy holds with lots of air under the heels. The views are pretty killer too, but I suppose that goes for any route in the Valley. It was a bit chilly when we climbed it, but I'd imagine it would be a good one for June. The headwall is super steep and shades the route pretty well until afternoon.