I have the same grips, one side I put on without anything, was a pain, the other I put a bit of copper grease in the grip and it slid nicely. Moved about a bit afterwards which was fine by me, more settled now but I reckon it will get off easily if I need it to.
this does not help me play polo tonight with the new bars.
they are cheap, but it seems pretty wasteful just destroying them. think of the planet!