it's a clasic combo. It also allows the squad to deal with "threats" to the wraith lord. The particular threat in mind is weak hordes which are unbreakable, like guants. they will never beat down your lord but he will be squishing them all battle and not acheive much else. they can get the drop and thin the herd intercept the assult leaving the lord free. It is still avdvisable to have a counter assult unit to rescue guardians as eventually they will lose.

dave l