You know there are a million furfies about GsP braid, and that includes all of the modern funny coating things, but generally GsP braid is very slippery, and thin and it doesn't, as far as I know, effect SS Snake guides. And I've use a lot of the stuff, on my spin rods etcc and I don't get cuts ever.What does happen is that under load conditions,like tangling big fish knots in GsP braids can get badly battered hitting guides, particularly snake guides on fly rods, Runners on spin rods are larger diameter things, not the ring diameter but the diameter of the line bearing surface.
And under high loads, the knots can slip and the very nasty critical radius, like the miminam bend criteria comes into play and the line can fracture. Which is why it is suggested that you use a line at least twice the b/s of the line you shoud use. Like for 20lb tippets a 50lb line, which will break at around 70lb, is fine.
I use 30lb GsP braid mostly, which breaks at 42lb or so, but I don't use knots so I don't get problems.