Here are some of the RB images mate, I only got it in September, and still have about a dozen rolls of film to scan and upload etc.
http://www.redbubble.com/people/oosh.../mamiya?page=1
I shoot pretty much only Velvia 50 also. Got some B&W done on a recent trip, but the lab ruined the negs so I've got nothing. Got some ektar to try, some efke 25, and some pan f+ sitting in the fridge.
KEH is a great site mate, especially for mamiya stuff!
Yep it's a Lee holder, and it actually has a 105mm polariser hanging off a front ring that goes on the filter holder in that photo, pretty much is always on there. That's awesome to hear the RZ has the 50mm's then... I'm sure the optics are much improved. I'm currenly not that happy with my scans, would like a bit sharper. Using a V700 flatbed and a custom film holder, but want moar!
That's actually a pretty bloody good price for that kinda digi back... that must be tempting.
Look forward to seeing some of your RZ stuff