The tone is very different from what I've read and is infused with confusion. I feel confused and surreal, like I'm missing something -- just like Ron.
"I'm not praising it. You're not going to see me wearing leather trousers any time soon—" Malfoy gestures to a couple as they pass "—but considering my … circumstances… it seemed necessary. It's become habit."
A nod to leather pants!Draco? :D
Ron's trailing after Draco and not understanding why seems realistic to me. And amusing. Self-denial!Ron seems rather accurate, even with Ron/Hermione in canon.