I can't tell if it actually works or not.
I have an Epi '58 Goth V and the "geniuses" at Epiphone (or most likely the guys at the Korean plant where it was built) put that rubber strip on a recessed channel the size and depth of the strip so it's completely useless! :smack:
"I don't care for the rubber no slip strip they put on the bottom of the guitar. It's an eyesore to me. I don't use it because of the way I hold the guitar when sitting down."