Didn't Sideshow say the armour was not designed to be removable?
Ya, basically what was said that the construction would be such that once's it's on the figure, you ought to leave it alone. If you want, you can remove it, but you'll have to use glue and such to put it back together. So customizers can utilize this if they're willing to glue and such to get their figure together in the end, but otherwise it'll be a non-removable costume.