I use a sinar F2 extensively in the field, I fly with them as well. In use it's a great camera in the field, light yet rigid enough to use with heavy lenses. As no camera is perfect for every photographer I have made several modifications to make the camera easier to travel with and quicker to use.
First I had SK Grimes cut the bottom inch off the twin vertical posts that rise the front and rear standards, this made the camera short enough to fit inside many more cases and it already had far more rise than I could ever use in the field anyway.
Then I had SK cut the 6" Sinar rail, which was more like 7" with the knob that extends from it, by about an inch as well. I had Camera Bellows in the UK make me a custom bellows that extends to 23" yet compresses to about an inch, allowing me the use of all of my wide angle lenses and even a 480mm or a Nikkor 720mm tele without any change in bellows.
Next I had the compendium bellows shade from my Canham redrilled and tapped so that I can move the mounting hole on it into a position where it aligns itself with the rod holding system on the Sinar standards. Now the compendium shade can sit on the standard all the time and given it's large size and the fact that I have all of my lenses mounted on small linhof boards and use the Sinar linhof board adapter, I can change lenses/filters with the shade on the camera. I also use the smaller non metering back on the camera as it is much smaller than the backs with the metering opening.
Now the camera, with both standards, shade and the mounting rail ring can squash down to about 5 1/2"- 6" by 14". It fits in an F64 large format (large size) backpack as well as the lightware 14x20" size cases. All I need do in the field is mount a longer rail on it, the rail clamp is always kept attached to the tripod head (Sinar pan tilit head) and acts like a quick release.
To speed set up in the field up even more, when I travel, including flying, I bring along a traditional box style view camera case and when in the field attach the longer rail(s) and just work it out of the case when I'm working from a vehicle. I fly with the case, filled with emptied sand bags, the reflex viewer and some other non photographic things, (including a squashed duffel bag which can hold a tripod, dirty laundry etc.), as checked baggage. If I need to hike with the camera, I just remove the long rail and put the camera in the backpack.