I've been to Kimmeridge twice and I love the place. Admittedly, I went in November and March so it wasn't very busy - just a few fossil hunters around. There were quite a few photographers around last time I was there (and the time before that was a TPF meet!) so I suppose that made me feel a little more comfortable. I also checked the tide tables and made sure I went at low tide so that I could get out on the ledges.
I'd definitely go there again, as you can get some stunning shots (have you seen any of the shots of Kimmeridge by [user]Milou[/user]?
Swanage, which isn't far from Kimmeridge, is a lovely place to photograph too.