I have seen so many comments like this about linen since returning to pool and am frankly amazed.
Linen is pressed, in the old days it was not. It took time for linen to break in back in the day. I believe that pressing was developed as a method of accelerating the break in period, it got rid of the rough feeling right away. But it still has a break in period when pressed. Even still, IMHO, it should not be slick or slippery.
I'm not sure if it is how they are pressing it (what they use on it) or if it's the linen.....but something has changed.
IMHO linen is, bar none, the most superior cue grip. Linen has very unique properties that lend itself to the task. But something has changed.
You want it sticky? Rub it hard with waxed paper, hard enough to get warm. It will get sticky. Rub more, more sticky. It will also attract grime. But linen will do that over time anyway.
You can also rough it up with some very fine grit paper. Then use your hand to rub it down. The heat and oils from your hand will give a nice grippy quality to it.
This is how my linen looks on my JOSS, it is probably pushing 35 years old, maybe more. I wipe it off, but I never have cleaned it any more than that. I don't want to. IMHO it is exactly how it is supposed to be. Perfect as a cue grip IMHO.