Enduros aren't bad, in fact I use them for practice alot on a similar surface. And feel they work pretty well. They excel on clean pack and soft loam.
However offer a large pin and moderate traction on just about any suface I've run so far, thus have made a great practice tire.
I run a few tracks and have found when rutted up I prefer lockdowns, when it's packed and wet holeshot, or lil chasers. if it's packed dry with dust grid iron II's