True, with a mix you could get the worst of both breeds. However, by 2 years old, you should be able to tell. (I might go an hang out in the neighborhood of the person getting rid of the dog. Neighbors know.)
Anyway, I have two cockapoos. The older female sheds some. However, she doesn't leave dog hair every where, it's more like a few curls here and there. (Not like when I had bassets.) My male doesn't shed at all. She bothers my allergies only a very little bit, he doesn't. When you pet the dog, the curlier the hair is the more poodle-like. My female's hair is like big curly waves, my male's hair is more pure curls.
I love both my dogs to pieces. However, there do have some pain in the buttocks tendencies. My female pees when a stranger pets her. Which contradicts my next point. They both get VERY excited at new people and dogs. (Translation: they bark.) So she only pees for the very brave.

Actually, they both calm down pretty quickly, but it's something you should be aware of. Of course, I think the two of mine tend to feed off each other, so I have a worse case than most. They also bark at other dogs when walking (take your friends dog for a walk and she how he does). I live next to a pipestem, and if anything is out of order in the three houses back there (cars parked in the wrong place), it warrents a warning bark. Could be good, could be a pain, depending on your attitude!
My female is more protective. My male... well he's a three year old baby. My dd and I were discussing that he will never grow up. All he wants to do is be petted. And he has the most beautifully expressive face. (My female is black, so you don't see her as well.)
They are both lovers. They are both companions. They both self-regulate feeding, which is a plus. You put food out and they eat either when they're hungry, or they like to eat after you start eating. They're fairly low energy dogs, except when someone new comes to the house! They do get along with some other dogs (few are brave enough to try to meet my barking maniacs, but the two dogs next door are their best friends, and they act just like kids because they're all so happy to see each other!)
My two are about 10 pounds different. The female likes to sleep with my daughter, my male with me. He can't get on the bed, at 18 pounds, and I finally got him some little doggie stairs. I'd get in bed, get him up, then have to run somewhere. He has to follow. Then I'd have to put him on the bed again. (Did I mention how expressive his face is? You'd do it too. If I didn't pick him up, he'd sigh and go sleep on the bathroom floor.

)
So anyway, in spite of my warnings, cockapoos are great companions. I'd definately check him out. Meet up at a public place first. But definately check out his home. (You can tell pretty quick if he's not really trained.) Ask the person's neighbors if he's a barker. Not necessarily to stop you from getting him, but to give you a warning. Is your yard fenced? Ask about his routine and habits to determine if they'll fit into your life if you don't have a yard. (Both of mine have set-in-stone bathroom habits. To the point of one needs to be on my right when she does her business on leash!) Take him for a long walk and make sure you see other dogs to see how he reacts.
If you don't want him, PM me....