Apparently they're an invasive species who eats voraciously and destroys crops and native flora. Also applies to rabbits I suppose, so I can understand OPs confusion.
I would give it a shot. The worst part of snail slime tho is it reacts with water and gets more gooey and hard to wash off
The second most unpleasant thing would be if it wanted to decide if you were food or not. You can feel regular sized snails tasting your skin; I can't imagine how strong a giant snail's radula would feel