I don't have any of those, but my longest ever ride in a day was done on a 26" MTB with 47mm slick tires. Probably could have done it easier on a road bike, but I don't really see why I would think I can ride the road bikes significantly further. Faster, for certain, but you already said you aren't concerned with speed.
Plus, I see no reason why you couldn't get a second skinnier wheelset for the Bombtrack/Fargo, if you did want to use the fatter tires for a trip.