Hi,
FWIW, we're shooting acros roll film all the time. We don't have a darkroom, so the local lab develops for us. I assume they develop this film as a 100ASA, running it through a standard Fuji developing machine. Until now, we've been quite happy with the results. That is: I would not expose at 125 ASA and develop as 100ASA. Last week we forgot to reset the dial of our Profisix and exposed the film at 160ASA (duh...) and now we're having a bit of trouble getting anything decent from the overexposed negs. This depends if it's the shadowy details that are over-exposed or the overall image. - Shooting with the sun in your back makes it worse, but if there is lots of shadow in your image, it's still doable. Hope this makes sense to you.