Envy may like Wrath as much as a self-loathing, self-serving Sin could but it wouldn't be beyond him to one day tally her up in his little trafficking business. She needed to lay off the saintly types as it were. He wasn't going to stop messing there if he had the opportunity to.
She was being lazy which must have rubbed off of Sloth. So far, the few times he'd seen Sloth's girl counterpart he had not been shut down into a slug-like abyss. If anything he ignited something within Sloth. The trade-in was Envy hadn't killed anyone today or the day before that, even the one before that. Hence his getting bored with himself.
He walked inside without much of a greeting, but he poked around. "Sloth's not here." He stated. Part of him was a bit disappointed.