This system works pretty well in eve, as when one or more players are mining at an asteroid belt, the escort players are killin the npc (pirates) that turn up which gives them something to do, am just guessing that you'll get wild bears etc wandering around for the escort to amuse themselves with.

At the end the resources collected are then split between all participants, I've not found any posts yet regarding wether resources are yours or the tribes but either way you'd still be gaining resources as the escort (either your personal share or from the tribe stores).

I'm a big fan on team play so if escorting some resource gatherers helps the tribe i'd be all for spending a few hours doing that.