Thanks for the quick responses!
David I got a Mamiya 645J with 80, 55 and 150 lenses. Going out to the Don Valley in the next few minutes to shoot a test roll (starting with a couple of rolls Ilford XP2 so I get get it processed quickly, but my plan is to shoot traditional B/W films and develop neg's myself). Very excited to try this!!
The funny thing is that I don't have a standalone light meter yet (although I have bought a Gossen Luna Pro on ebay, just waiting for it to arrive). Will need to take my DSLR along to use as a light meter. :-)