As intimidating as the hooded figure can occasionally be, Ecks will find that he's actually pretty skinny beneath that heavy cloak. So yes, he is the one being shaken.

It doesn't hurt so much as it startles him. How dare she? Draco will probably find those thick boots a little much to gnaw through; he also might find it rather painful as one of them lashes out hard this time. He's been very patient with all this, but he's just about had enough.