+Kryštof Adámek The more it's done, the more risk certainly involved. That being said, if the job is done properly (rivets aligned well, proper drilling if required, etc), then re-riveting them will be fine. That being said, we would suggest buying a used pair of skates and have two totally different pairs of skates... one for inline, one for ice. You only have to pay once to have them riveted that way as well, and much less hassle! Thanks @KryštofAdámek
