We groom several doodles..
I have yet to find a labradoodle I am not allergic to. I don't know what it is, but I'm more allergic to labradoodles than ANYTHING else. There is only one goldendoodle I am not allergic to. We only groom one flabradoodle but I am allergic to him. The doodles here are very dandruffy, I think that is why I have such a problem. The hairier they are, the more allergic I am (I think maybe because the hair traps more dandruff?) hence why I am more allergic to multi generation doodles. I'm allergic to a certain TYPE of dander that most breeds don't have, and the doodles have it.
As far as hyperness, I find the goldendoodles to be much more hyper, but the labradoodles are extremely skittish and absolutely terrified of everything. I've seen the parents of alot of these dogs as there is a breeder not too far away -- lovely dogs, they are shown, health tested, used for sport, etc. Somewhere between mixing the two breeds something goes terribly wrong, as I have yet to find a labradoodle with a decent temperament. There is one goldendoodle I really like -- he's a bugger to groom but a very nice dog, not a shy or sharp bone in his body, and not at all hyper like the others we do. NICE coat too, it's huge.
You never really know what you are going to get when you breed a mix -- I will stick with my purebreds --- alot more predictable! That lady was out of her mind, running around telling everyone what great dogs they are -- I NEVER spout off about Belgians, as Belgians need special homes, special care, and are difficult dogs to manage. Now she may have convinced someone to go and buy a labradoodle, thinking that they are hypoallergenic and not realising the amount of coat care they can require.