that stuff does seem to get fog on it very quickly--I had mine a couple of months in holders and, during that time, it picked up enough fog to where it resulted in, at first a brown town, and recently, actual dark silver over the brown tone. Ferricyanide bleach cleared up that slight fog like magic. But, yes, fog is something to look out for--I don't know if this same fog appears in normal processing--this is after very very strong re-exposure and re-development "to completion" of everything left after the bleach process. Since this fog that I mention did NOT show up in the first development (it needed the extreme re-exposure to become developable), it may not show up. Seeing as how mine did get "reversal foggy" in a couple of months, I'd assume any stuff that's been sitting around will need the bleach treatment after processing.
30 inch is difficult to cut down however. the 8" is best for 8x10 sheets. 30 inch would be fun to play with for super ULF experimentation.
Then again, price is everything.
CARNIE--I'd be interested if you can cut the stuff down---I'd like 11x14 sheets myself.