Hello,
I just bought a few mats from fohat.digs a few days earlier.
Attached are pictures of the mat that I have on hand at the moment. It's not especially slippery or grippy, which is fine for me.
If you are extremely heavy on your keyboard movements, you might actually move the mat slightly sometimes. I have never had any such troubles, but I could move my keyboard if I give a little extra push.
At first, the mat looks pretty ugly, but after a while, its grown on me, and I don't really see it much.
If you want some cheap mats made to size, I'd highly recommend most people to buy these.