I've never understood the Fotoman cameras. The cost is higher then a brand new Shen hao 4x5 and the 6x12 roll film back. Worse I think you'll end up spending more money on lenses because of the cones. I can't see using a 6x12 handheld so that means a tripod. Once you've setup a tripod you won't be invisible. If you want ground glass it's even more money?
You don't need to use movements if you don't want. So no reason to worry about movements. Considering how expensive the Fotoman is you could get a lightweight 4x5 and the Shen Hao 6x12 back for similar money.