Before he retired and went into the teaching lark, Herb Trimpe had a very long career in comics, mainly due to his ability to ape prevailing styles. He got in at Marvel due to his Kirbyesque ways, stayed there throughout the seventies, where he put a much-loved run in on THE INCREDIBLE HULK (including the first appearance of Wolverine, though I believe that character was designed by Marvel's then-artistic director, John Romita); over here we love him for his work on CAPTAIN BRITAIN WEEKLY; he pencilled the first three issues of the wonderful MACHINE MAN mini-series usually attributed wholly to Barry Windsor Smith in the mid-eighties; and by the nineties he was being rediscovered by a generation who knew him only for his Liefeld-esque work on titles like G.I. JOE.
So now that he's re-emerged to draw BPRD: WAR ON FROGS, would you be at all surprised to hear he does a pretty spot-on take of Guy Davis's style?