Funny you mentioned looking at this model and have a 3685FL. We too looked at one and made some of the same discoveries you did about the AX6. decided the Montana was a better choice and haven't regretted it. We like to be different and if Montana would build one we would probably look at it in the future.
Ron & Melinda Rosewall
Marcus, Iowa
'06 F350 DRW King Ranch 4x4, diesel pulling machine.
'04 3685FL, Fireplace, Cent Vac, Fantastic Fan, Safety Glass, 2nd A/C, Slide out awnings.
http://www.picturetrail.com/fordzilla