The guy I hunt with grew up a mile away, we have been hunting and fishing together since grade school. We know each other really well and work well together. The only drawback I see is that I am more driven to hunt hard than him, he sometimes gets discouraged when weather or game doesn't cooperate and we are putting in lots of effort not seeing much. Still wouldn't trade him in, I just let him do his thing and go it alone when he gets that way. He is color blind so he needs help on blood trails at times, and I seem to spot more game because I can tell greens from orange or brown. Especially when deer have their summer coats it makes a big difference.
If I was looking for someone I'd try to find someone willing to put in time going over topos, calling landowners or game wardens, etc. Someone who will put in the time and effort on the pre-hunt research is likely to be serious about hunting when you arrive. Make sure they will pull their own weight in both time and money invested on things you will both use like fuel and shelter. I like people who feel like it is a group success when our plan comes together and one of us fills a tag, not jealous. I take pride in being part of outsmarting a wise old buck or bull no matter which of us pulls the trigger.