From these comments, I would guess that lens interchangeability is not important, if it is important that drives the entire conversation. I don't believe you have mentioned what type of work you intend to do in 6X9, landscapes, general photography or areas where control or precise focus is required.
About 6 months ago I was fortunate to win the bid on a Fuji GW670II, which is not the GW690 you had a chance to use except the difference in format. I have been very impressed with this camera, the format and the results. There are still people out there that can service these, and I would agree it is a bit big (Texas Leica is a great name) it may weigh in at about the same as my Nikon F3 with Motor Drive attached. And I would have no problem using it as I would a 35MM like the Nikon. If you are patient on Ebay or resourceful with Goodwill.com sites, etc. I think you can avoid overpaying for a Fuji.
Also, if memory serves me correctly, Fuji also manufactured a folder during the same time span, but in 6X9 format I don't know. Hope this helps.
Fujifilm never made a 6 x 9 folder. They did make an interchangeable lens 6 X 9 camera however. Currently Fujifilm is selling a 6 x 7 folder (GF670).