From what I know, the possible issues will depend on the variety of viscose acetate used and how well it is woven. Viscose acetate can go from smooth as silk to compared to wool. Some verities do not hold pleats and hardly ever wrinkle, yet I think that is normally the lighter verities that are compared to silk. Weaving quality will depend on where it was woven. Either way I would expect it to age better then woven acrylic and am interested in hearing how it holds up in the long run compared to the wool kilts you mentioned. I am often interested in learning how new kilt materials hold up over time. So far wool and PV from Marton Mills seem to be the best, but one day someone might find something else that works at least as good.

This site has some background information on the material:
https://www.nyfashioncenterfabrics.c...iscose-fabrics