[An eyebrow is raised and he picks out a skyscraper at random.] Without going into detail because it's rude - I'm as big as that sans this form.

[He's actually infinite but that's beside the point. Rarely if ever do angels talk about their actual appearance, actual needs, and when he says cut them off-

Gabriel is on his feet, face angry. They'd grow back, but-]

How about I take your arms and legs in trade?