As long as you cut slow enough, I don't see there being any downsides. Though there are positives to a single swipe of a blade taking it off, too. The pain is delayed, like slicing your finger with a knife. There's nothing, then it burns. It's a totally different feeling.

[ he toys with her hair lazily, as sticky and bloody as it is. ]

I can take any form I like, and reform almost instantly. There's almost nothing I can't take.