Big Squid has a review up of the Flux
with more pix and some video.
The batt trays do look pretty good. Nice thing to see is that it looks like the tranny would be a direct swap. Hard to tell for sure, but looks just like the nitro tranny pattern. Would make nitro conversions a real snap I would think. I have a nitro XL, but if I get tired of it, swapping it over should be a piece of cake.