Depends on volume.
If its just a few peices in a customers home, then i'll use solvex or citrus gel with a blunt knife.
Did a nightclub on Tuesday and the place was covered in it!
It didn't look so bad when i quoted! I gave up after about 20 peices (as my hand was getting sore) and went to my van to get the wal paper stripper.
That was my anwser. I'll expand it:
Give the gum a couple of stabs/slashes. Apply solvent of choice to damaged gum, then work it in / scrape it with the edge of the blade. Keep on scraping till its removed from fibres. Mind you dont knackard the pile.
Then extract area.
Takes me about 1 minute to remove one average sized gum splodge.
Never had any problems with this method.