I think his name is Talem, the cairn guy who pops up here and there. Be cool to buy or unlock his set, cat has got some style. We can already get the mask, be nice to complete the set.
Why not extend this to all NPCs, somehow unlock and wear what the old bearded guy wears and what the fellow next to the stone map wears. Let's wear them all!
edited February 2019
Seriously, this is a good idea. Fleshing out the gear and story elements around it would give the game further color and a potential means to direct player behavior.