The pants situation has been resolved, but Angeal's not bothered with anything else when the door is opened. Shoes, socks and shirts are apparently optional, as he hasn't bothered, but at least he has pants on.

Vincent and his beeping captive are studied for a long moment. "I see. This can't wait. Come in."

And then he walks away, heading for a small dresser and beginning to rummage through the top drawer. He already knows Vincent will close the door, so theres' no point in saying so.