Maxi-scooters have been used before and one particular member on here (I forget who) seemed to feel that it had performed admirably, in all sorts of terrains. If you are on tarmac I don't think you'll have any major problems. If its dirt tracks, it'll be tough, but then so would it be on a deauville. The Honda has bigger wheels, so can ride over obstacles more easily, but it is very heavy and the Suzuki is lower so easier to control... Swings and roundabouts really. Certainly can be done and is not that big a hurdle... Hopefully you'll get some first hand accounts soon that can address some of the more specific questions you had.
Adventure: it's an experience, not a style!
(so ride what you like, but ride it somewhere new!)