There are varying degrees of tame. Ringnecks generally do not become as tame as other birds like some 'tiels or 'toos that will laze about all day waiting for a cuddle, some are, dont get me wrong but they are in a generalised sense pretty independant and, well... temprimental birds (some would say moody

)
I know that Datsun has her happy-go-lucky independant but snuggle bug days (most of the time) her piss off Im grumpy days, her Im happy to just play alone today days, her tricky want to cuddle and also bite you days, and my least favourite her I can not be an inch away from you for the next 24 hours days.....
I am a firm believer that you can overcome anything with any animal with proper training and the right environment. You say your bub will be raised well with loads of love and socialising which is the best possible start. The fact that you are friends with the breeder and can have contact as the baby grows is great too! The rest is up to you once you bring you IRN home, the training you put in, whether you handle him with firm confidence or pussy-foot around catering for his every whim. It is eay to spoil these birds and they turn into bratty children
Have high yet realistic expectations for your birds behaviour because they want to please you and willsoon work out what does it. Expect them to step up as soon as you ask, every time you ask and they will. Also if you socialise your bird with family, friends, children and the public if possible you can have a bird who will behave well for evevryone not just you.
Datsun is lucky enough to come to work with me sometimes and all of the customers are interested in her, whether they are frightened of birds or love them she is very good for educating them. She will often say hello or what you doin? to them and if I tell her to she will step up and sit quietly on their finger for a quick pat, for some (her favourite) customers she will go for a trip around the store with them.
On the other end of the scale if she gets a fright she will bite. A twelve year old boy ran up to us and shoved his hand in her face when she was out with me the other day, I told him off saying you should always ask the owner of any animal before getting too close! His mother was with him, but he did it again and she bit him, I appologised to his mother who said it was ok because I warned him and when he had calmed down (and poor Datsun) I asked if he would like to see what would have happened had he asked first... she stepped up, pinned her eyes because she didnt trust him but stood there and said hello anyway. She is very well behaved most of the time but even so she still has an element of unpredictability... you learn to read body language very fast!
