Pretty much every top carom player uses a rubber grip. You can buy them for about $5 and they roll on and roll off.
Irish linen -- I think it is neither Irish nor linen -- makes a lousy grip if your main interest is proper function.
Bob:
I agree. Unless Irish Linen is pressed (or better yet, double pressed), it makes a lousy grip for anything other than a standard slip stroke (e.g. Willie Mosconi, Cowboy Jimmy Moore, et al.). In fact, I'm wondering if that's how the slip stroke came about -- adaptation to Irish Linen, and exploiting its slippery nature?
I have a
Joss model 828 that I
won in a raffle at Turning Stone, and Joss's method of applying double-pressed Irish Linen wrap is good -- the best I've tried. But even then, it's still Irish Linen, and inherently slippery. It is good for sweat absorption, though, if that's a problem one experiences with the grip hand.
My preference is wrapless, or failing that, polyurethane-coated. Leather wraps are great, and I've usually taken my Irish Linen-wrapped cues to my local cue luthier to have the Irish Linen removed and replaced with a nice leather wrap. (I also keep some of those rubber grips in my case for those cues I have that still have Irish Linen [they're awaiting when I have the funds to get the Irish Linen replaced with leather

]. These rubber grips are great, and are easily installed and removed as ArizonaPete / Bob Jewett describe below.)
I'm d-y-i-n-g to get a stingray wrap! With those hard little boney nodules throughout the rubbery hide, it has an exceptional feel. I tried a stingray wrapped cue at this past year's Super Billiards Expo, and immediately loved it. However, stingray hide is not easy to work with (very few cue luthiers / repairman have the knowledge and the tools to work with it), and it's expensive. Ahhh, but one day, one day...
-Sean