OP! I don't know if Reid specifically would figure out that Matt was Daredevil...I mean, if Matt wasn't going out while they were there, how would he? And maybe there are other people on the team who could figure it out? Oooh, maybe Garcia, with her computer powers?

Also I think Matt would get along best with Morgan, personally. Not sure why. And JJ and Foggy: bros. Foggy and Garcia, too.

I could see one or a few of the team thinking Matt might be Daredevil, but consciously not really giving the theory the attention it deserves because it's not the point right now. So...secretly keeping the secret.

ANYWAY.