Ya, make sure you have some sort of AWD/4WD decal somewhere. From what I hear around my area, if you are towed (2 wheel roll) and there is no visible sign of this info, they are not responsible for damage. And ya, you can get some damage if towed in that manner. Not sure how much truth there is to that.

I have been towed a few times, but by my authority. Always a flatbed.