[He is looking at Dist during the first part, and his expression lightens a bit at the words. That's precisely what he wanted to prove by telling Dist this much; he does trust Dist.

And then Dist continues and the expression falls away for a mildly confused look before the words really sink in. After all this time, this is the first anyone has ever suggested something like that. If the mask is brought up at all, it's usually to ask what's under it or why he wears it, this is...

Well, it's getting him to laugh, and he glances away as he reaches up to cover his mouth to try to stifle it.]

You never fail to surprise me. [It's fond, not reaching exasperated like he was going for.] I'd like that, Dist. I've gotten used to this one, but I can't say I'd be opposed to a change.

[Provided it fits his aesthetic, of course.]