Most certainly not have I shot at f/206 before. Reason enough to get one
But seriously, this sounds like one cool device. The only thing holding me back at this stage is my inexperience with processing and printing 4x5. Also, my enlarger only goes to 6x9 (talking cm here) . Not sure if I'd be happy with just contact prints.
The TiTAN sounds ideal for hiking and travelling. I don't see any weights specified, but very heavy it can't be, not even with a back and a modest tripod added.