I actually have, and the reply was just that "curly hair tends to like a higher pH..."
I'm not sure how true that is honestly, lol. Because my previous staple products I never tested the pH of them before I replaced them.
But so far it just seems like the higher pH while it may have great slip - it leaves the cuticles open and thus you may get ripping and snagging while trying to detangle the hair. Very strange to have a product with that much slip and moisture give that kind of result.