The sleeves aren't of concern to me with the Hasbro robes, it's the too small hood of it, it was too small for the figure it came on, and it was designed ot be stitched to the top of his head.
The stitches come right out without any damage to the hood so no worries there. I don't think the hood is that small. In fact the SSC head is probably going to be a little smaller than the huge noggin the Hasbro one has so I think it should fit just fine.