No, because there is not a whole lot of shuffling and the cards feel pretty nice. The objectives/locations etc. also doesn't need to be handle all that much so I most likely will keep them naked. I only recently sleeved games that I take to the café and MeetUp group and games that require a lot of card handling.
I ultimately went with sleeves. You can still see the cards nicely if you use the FFG clear (silver) sleeves. Think there are valid reasons not to though. I just think I'll be playing dozens of games with these so basically I'm sleeving all encounters, and cards used in my builds.
Yeah, good reasons for both. I am worried about wear and tear a bit.