As always, he takes the time to run his gaze slowly over Tony once he's fully undressed. He never gets tired of that.

(It's easy enough to mentally edit out the slight differences between Sherlock's body and Tony's. Most of them are less obvious than the scars on his neck, and in any case both bodies are equally appealing on a visual level.

Sherlock, of course, doesn't bear the marks he is so looking forward to seeing on Tony, but Obadiah can let that go easily enough.)