Using bag bellows with the 90mm means I can utilise the extreme coverage of that lens without forcing the standard bellows into positions where it could lead to damage or a premature life expectancy. I have a bag bellows for my Shen Hao and use them whenever I use my 90mm or anything smaller, the bag bellows certainly makes life easier. The reason they work is because you have almost no possible movements with a 65mm lens as it just covers the 4x5' format. I regularly use a 65mm on my Shen Hao, it will work with the standard bellows, they are fairly scrunched up, but they do the job easily. The reality is they will both do virtually anything you could imagine in the field, and, within reason, the are both pretty good at architectural photography. One has more rise on this standard and so on. The Shen Hao has rear shift, whereas the Chamonix has its shift on the front. There are slight differences and on paper, the Chamonix is the better camera.

I have the Shen Hao you are considering, it is an excellent camera, I have used the model prior to the current Chamonix camera once alongside my Shen Hao. But so long as said nut is the captive sort (wouldn't want to drop one in tall grass or deep snow would you?) these seem like reasonable tradeoffs.

Main thing I notice with the Intrepid videos is that they've cut costs by eliminating niceties like spring-loaded pieces which automatically lock front and rear standards upright at 90 degrees, and in order to collapse the front standard, you've got to unscrew a nut. The reason is that with really short focal lengths, your bellows is more compressed at infinity focus, and compressed bellows don't allow for a lot of movements, at least not shifts. Really wide lenses may require more specialized hardware such as a bag bellows, or even a different camera altogether, but I have no experience with such. The widest lens I ever used was a 90mm Schneider Angulon (non-Super) which had the added advantage of being small enough that I could leave it mounted on the camera even when it was folded. Never really used front/rear swings or rear shift at all. I used front rise a lot, sometimes front + rear tilt + tilted bed to achieve even more shift. I'm not super-experienced with LF but have carried a field camera into the field (where else?) on a number of occasions.

Leitz wetzlar germany 250mm flickr