That stuff is evil. I've lost count of the number of 'soft touch' latex-like 'anti-slip' style mice, cameras, torches, keyboards, you-name-it stuff that gets destroyed when it goes sticky.
I have removed it from several Nikon cameras, a few Canons and even my Philips Philishave electric razor. A beard trimmer that got so sticky I threw it out, even after every chemical known to man wouldn't remove it.
Even IBM/Lenovo's old Stinkpads had that wretched coating over the magnesium shell and when it 'turned' you got it stuck under your nails.
Why on earth do they keep using it?