I don't see how it would be a problem when loading cassettes, or removing the film. I understand it is possible, but it seems like you'd have to go out of your way to get any exposure to your film that way.

I am, however, very careful when peeling the tape from a new 100' roll of film. I don't know if that is still the norm for packaging, but Kodak used to tape theirs and you could easily get loose a frame several in from the end on the first roll you loaded.