Everything we are told about Voldemort in MoR (at least part of which comes from reliable accounts) matches canon Voldemort and suggest an equally cartoonesque villain composed mostly of questionable motives, self-defeating pettiness and pointless cruelty, with zero PR skills and awful fashion sense, not to mention a certain fondness for the Idiot Ball.

Except we also have Dumbledore describing V as clever like Harry, or words to that effect. The two monastery stories seem consistent with this: first of all, canon!Voldemort would never have sought out a Muggle teacher at all. Second, the two stories together suggest that MoR!Voldemort got what he wanted and then returned without his disguise to get revenge, like he said Harry would do if Harry became like him. Also, what orthonormal said.

Edited to add: and come on, we know MoR!V killed Narcissa Malfoy. Draco told us himself to look at the result and ask who benefits. The plan surely broke an evil overlord rule or three, at least in spirit, but if V couldn't get Lucius on his side he probably needed to kill the default leader of the pureblood faction anyway. And V, as a skilled Legilimens, could probably count on Lucius responding irrationally to his wife's death one way or another.