hmmm emperor is probably dead ye know? lol. but hush, if the imperium let the peasants know there will be massive disarray
anyways, ah yes, the WAAAAAAAAAAAAAAAAAAAAAAAAAGGGGGHHHH !1!!1!! lol
hmm it has been said they could be nigh unstopopable....but as wakim said, their orkiness !!!! now, what i would do you see, is.... get alot of shiny copper pieces

throw them towards the warp storm past the oncoming Orks

now, this is where they would reply..."oooooh shiney !! " and run off after it into the warp. this would either a) destroy the orks (huzzah) or mutate them somehow and be even worse for the imperium... and i mean of course, not mutated as in vile and even more strength....no, i mean,....imagine fi the warp... "civilised" them ?!?!?!?
o
m
g
now then they would be a force to be reckoned with :O