I've gotta go with Jan on this one. (Yeah I know, wonders will never cease).
It's been pointed out to me and it does make sense that not only can scales get caught up in the loose threads albeit a slight chance but teeth can as well. Which would be more of a chance, especially if the snake is writhing around a bit. It's not a huge issue and I'm sure it's not a common occurance but why take a chance? It's takes 2 seconds to turn it inside out. Unless you want everyone to see the 'Masters of the Universe' pictures on your pilowcase, then I'd leave them right side out.
I also back-up Jan's thoughts on Terri Bellamy. If she says it's wrong, then it's wrong.
Greg. (Agreeing with Jan twice in one day, who'd would have thought hey?)