You’re probably not going to be telling your good party that you’re evil and just using them, so anything to help blend in and achieve your goals is a good thing. I constantly use my Chaotic Evil Cleric of Cyric this way, and deception is part of the game plan. I can pretend to be good, if only to better serve my evil god. Now if the thing in question just happens to be something I need for my evil goals, but I can’t just tell them, I could simply wait until we rest and steal it while I’m on watch.
You’re probably not going to be telling your good party that you’re evil and just using them, so anything to help blend in and achieve your goals is a good thing. I constantly use my Chaotic Evil Cleric of Cyric this way, and deception is part of the game plan. I can pretend to be good, if only to better serve my evil god. Now if the thing in question just happens to be something I need for my evil goals, but I can’t just tell them, I could simply wait until we rest and steal it while I’m on watch.