They can go, but is it really the big deal? Give 'em caltrops, instead of the champ with vb.
Would be my first choice to go. D6 attacks with S6 en passent is, in my opinion much better,
than going in cc. And you can hide with 2D6" movement in the assault phase.
When I'm good, I'm very, very good. But when I'm bad I'm better.