UPDATE: after a face to face chat the main issue Master and I kept coming back to was that of my safety. Working as I do out in the public eye, I've manged to acquire one or two or six stalkers in my time already (and that was fully clothed!) .Having watched some of these scenarios unfold (as well as being a rather protective kinda' guy to begin with), J's first instinct is always to keep me out of harm's way. In discussing the issue we covered a lot of what was already mentioned in the comments above, as well as the real and the percieved threats, and in the end decided together that it would be a unique experience and that I should give it a go.
So grab your charcoals, pencils, and oil paints folks - we're going to art class on Thursday!