I know that GEC and other traditional brands will use them, but they are on lighter duty slip joints and not on their fixed blades. I would feel safe in presuming that this is due to their comparative brittleness (compared to stabilized wood and micarta) and being slippery when wet since most acrylics looks best when brought to a high polish.
That being said, I feel that the most grip comes from a better ergonomically designed handle and roughness is only an attempt to make up for an ill designed handle shape. Kabar/Becker knives use smooth grivory handles, but they are nicely shaped, so even when covered with oil, you can stab a stump repeatedly and be fine.
A lot of Johns knives are the same, with a high polished wood being of no detriment to grip, but still lacking hot spots. Though just about every wood out there is either inherently tougher than acrylic, or stabilized to aid in the toughness catagory.
