FWIW, offering my (far from expert) experience...
I also ordered the Rutan cloth from ACS (couldn't find the uni-cloth recommended in the KAI at the time)
The Rutan cloth did a great job accommodating the curves. However that same characteristic made it a pain to keep in shape as you move it from the cutting table to the layup. That stuff just flexes all over the place, changes dimensions, and drove me crazy. Also, the lighter weight didn't build up as much as I'd expected.
I'm not unhappy with the result but I will have to do some filling in some spots while prepping for paint. Probably would have to anyway.
RECOMMENDATION: Save or duplicate the fabric cutting templates in case you need to redo a piece or two.
two-cents,
Dave