So this question came up as a result of the battle report posted in this thread
http://www.dakkadakka.com/dakkaforum/posts/list/582778.page
Specifically around the scenario of necron scarabs charging the knight
FAQ
Q: Can I charge an enemy unit that I can’t hurt? (p20)
A: Yes
Pg 76 - Assaulting a vehicle
A unit can not charge a vehicle that it cannot hurt
Pg 84 - Walkers
Walkers assault, and are assaulted like infantry models
The conclusion made by Reece, which I agree with, is that since a walker, in this case the knight, handles assaults like infantry, then the note on
pg 76 regarding assaulting a vehicle does not apply there for a unit, in this case scarabs, can charge the knight
Wanted to open this up for debate / discussion