im guessing you could quite easily do this but would immagine you would need the points in destruction tree that allow for less intrupt on channeling and also give a chance to stun, not tried and test i really have no idea how good or bad that stun is, but its about 13% on each pulse so x4 would give it a good chance to almost stun lock most things.

you would probably need to spam POH from the priest to keep them all up.

if i remember rightly i saw someones video on youtube doing this in SM gy.