Those pictures are very helpful, thanks. I do remember when this same discussion came up earlier in the thread and I always figured that the Marinoni had a very similar wheelbase to that of the GTBs. It is pretty close in fact, so I think that the big difference is just simply that the GTB is fixed and the Marinoni is not, so I have to be more attentive when riding the Marinoni on the rollers.

It is weird because it is the exact opposite on the street, I almost tune out when riding a road bike cuz I can always just slam on the brakes if there is a problem.