I certainly wouldn't use the word "cuddly" to describe a Pionus. Most of the pionus owners I know say that their birds love a good head scritch but aren't overly cuddly. Hardy, my Maxi Pi, is certainly not cuddly at all. He loves a head scratch, but only on his terms. If you attempt a head scratch when he's not interested, he will chomp you hard.
He is excellent at going with the flow. I can bring him out when we have company, when I want to watch tv, doesn't really matter if it's noisy/quiet/dark/etc, he's pretty relaxed about his surroundings. BUT .... he gets quite surly after 8:30PM and doesn't want to socialize anymore. He prefers an early bedtime!
He is a good eater - loves to try new things and eats just about everything I put in front of him. I need to be careful to not let him get too chubby. He is not lazy at all. He climbs all over his cage, loves to scurry around on the floor, and is quite active in destroying his toys. Considering that he is missing a wing and a foot, this is quite the accomplishment!
He is not needy at all when it comes to attention. He can entertain himself in his cage, but he loves to be out with me. Just not after 8:30pm....
He doesn't nip. He bites HARD. His body language is very clear - his feathers ruffle up, he gets a weird little bend in the tail like he's hunching over, and he opens his beak and charges. When he bites, he means it. And when he means it, and I'm dumb enough to not read his body language correctly, he draws blood. I have a healthy respect for his beak and avoid him when he's being moody. He's 3 yrs old now and extremely hormonal, so I expect that this will even out once he is a bit older. I really, really, really hope it evens out when he's older ....
And he totally did not get the memo from the pionus marketing board that says he should be a quiet apartment bird. He yells his head off several times daily. His scream is loud and harsh and carries across the house effortlessly. He can outscream my cockatoos. I think this may be hormonal too as he was REALLY bad last year. In the last couple months, I've noticed that his screaming periods are less and less. I never acknowledge his yelling in any way, so it gets him nowhere.
Pi's aren't known for their ability to talk, but Hardy doesn't follow that rule either. He talks up a storm and learns new words & phrases effortlessly. He uses them at correct times and will switch words around to make sense in different situations. I taught him to say "I love you!" and last week he looked at me with bright happy eyes and said "I love ....... HARDY!" Egomaniac.
He's also very confident. I don't know if this is a pionus thing, or just Hardy. Since he can't fly, I take him outside often and we go on field trips. He is talkative and happy and interested in his surroundings. He loves to scratch around on the ground, and isn't afraid of bigger animals. He has met horses, and ponies, and goats. He is a very cool little bird, but you have to deal with him on HIS terms or things get ugly.
I love him dearly, and think a pionus is a great bird. But they aren't as "easy" as some of the material out there indicates. They can be messy, noisy, bitey, and hormonal just like any other parrot.