This brings back lots of memories(most of them bad). When you fall on grass you don't slide(unless it's pretty wet) And it usually hurts. You can't side slip at all, if you try you'll catch and fall. "Catching an edge" at speed is dangerous. I suffered several broken ribs from flying out of a GS course once.
About 25 years ago Tyrol got some pairs of the Rollka Grass Skis. It looked like a good idea for fall training. We set up a GS course and would run it on weekends. By the time ski season rolled around just about everyone(myself included) had some kind of injury that was enough to interfere with their skiing.
Good jump turniing skills can be useful for that kind of grass skiing. Falling isn't too much of a problem when the ground is wet... unless there is a rock. The rules are easy: Don't fall!
It's a lot easier to just SCHRALP THE DIRT than take your skis off every 100ft on a melted out trail.
JohnH Actuall that did no damage to the bases since he only hit grass and mud. Even if it did, a core shot or two is hardly noticable anyhow when you ski out here unless you are racing or something.