Last night in class, we had a case of slippery socks. A student was cold, after all it is raining in San Diego, a cold rain. Slippery socks can be used as a training tool. Use it to adjust to slippery conditions of an unknown combat situation.
She retorted that she would just pick where to fight or defend herself. Alas, that is not an option in self-defense. The situation picks you regardless of the suitability of the terrain.
So when life gives you lemons, make lemonade. When training gives you difficulties, make it a learning experience.