"The decision that Lips and Robb reached as teen-agers, to rock together, is one that they have stuck to for thirty-six years. That symbiosis has come to fuse the pair so unbreakably that, at some points in the documentary, you can scarcely tell them apart — never more so than when they bicker, which is half the time. 'Why am I your fall guy, constant-fuckingly?' a plaintive Reiner asks, amid the angry fallout of a recording session. 'Because I love you,' Lips replies, quite without embarrassment or doubt. I have noticed something similar in the bond between Francis Rossi and Rick Parfitt, of the British group Status Quo, and we should celebrate the way in which pairs of aging rockers tend to wind up like lovely, crumbling old married couples, with each one finishing the other's sentences and pining when he has to go away."
— Anthony Lane on Anvil! The Story of Anvil in The New Yorker, April 20, 2009