I know a couple of other families with schnoodles, and they all have lovely temperaments...the type of dog that runs around with you in the backyard, but you could trust with an infant. Our one has never even gone close to biting anyone.
Had our one for eight or nine years now, and while I originally wanted a rougher breed(we had to go a poodle cross because there's a couple of asthmatics in the house, myself included), you couldn't really ask for a better, friendlier and more manageable dog than ours, and like most pet owners I wouldn't trade her for any other dog.
I imagine the temperament is probably the same with most poodle crosses.