Haven't heard so far about the head stuff.
The fact is, gums are a physical danger to pouchies.
Even if you know better than to swallow it, there is no telling when you may accidentally swallow. I'm sure y'all have done that once or twice.
Once in your pouch, it's going to get stuck there. It won't dissolve, it won't move. You need to keep in mind, the stoma--the opening in your pouch to the small intestines is only about half an inch or so. Someone--your surgeon or gastroentrologist will have to try to get it out through endoscopy, and if that doesn't do the job, it will have to be removed surgically.
For one glob of a sticky piece, that is a heck of a lot of trouble, and a heck of a $$$ bill for something that's what, a dime or so?