Printing 35mm full frame.

It is true that scratches can occur but there are a couple caveats.

One is cleanliness, the other is that the emulsion has been on the outside of all the rolls I've gotten (but that is not a given), in my cutting process that means emulsion down (against the base board, not the plastic) as it comes through the cutter.

I get a scratch in about one of 50-100 sheets, so pretty rare.