Perhaps they have, though I don't believe the SecDef is totally against conventional land based artillery of any type, just because he's against Crusader. There's goodness in all of these systems. It's the smart commander who kows how to use all his resources, synchronize them for maximum effectiveness and adjusts his plan when the situation dictates.
What is a Gator? Not the thing that eats pets and children but the ATV Gator.