Unfortunately, it's not fantastic rock for climbing. The rock wall you see in the first picture is only about 12 feet tall, so a lot of the imperfections you see are far to small to provide any sort of grip. It's generally very smooth, too, and doesn't friction well. Where there are imperfections, the rock seperates into its very thin layers (it's shale) and crumbles easily, breaking off at sharp, jagged angles. There are spots you can climb up, but it's a very different sort of climbing than "real" rock climbing, depending more on finding a safe place to put your foot or hand, less strenuous (generally) and more limited-feeling. Aside from myself and a friend, I've never seen anyone actually climbing up the rocks, since there are gentler paths up to the top.
My area isn't really known for its fantastic climbing opportunities.

Almost everything is crumbly. About 20 miles south you start finding some good rock.