Michael,
I repaired my wife’s boots a couple years ago using Freesole, and there’s been no peeling or cracking of the 2″x4″ patch. To make a big patch like that, you make a square of masking tape around the cut as a guide and then flood the area with the Freesole. For the small cut on the glove, no prep was necessary; just a dollop spread over the cut with a toothpick.
I learned about storing it in the freezer from Jerry here on the forums. Also good to put vaseline on the threads before putting the cap on so it doesn’t glue itself shut, but if it does, just flex the tube back and forth until you get a small hole at the edge of the crease, and apply the Freesole from there.