I just now saw this thread!! Yes, I have both Pionus and Poi relatives (close enough to a Sennie lol).
They're both different, but one thing they have in common is they're VERY independent birds (unless they were raised to be more clingy, but it's not in their nature). I have to say as far as parrots go, mine are pretty easy. They're not a bit demanding if I'm extra busy, and have no problem self entertaining.
First, the Poicephalus parrots which include Senegals (if they're handfed and handled regularly from a very young age) can be very hands on and cuddly. They're really the only genus that I can think of that can be both that cuddly and that independent at the same time. IMO, the only drawback to Poi's is that they can be extremely hard biters for their size. They do tend to freak a little more easily than some birds, and tend to bite first and ask questions later. Many individuals of this genus are on the nippy side, and training can only curb it so much. It's just in their nature. Doesn't deter me though. I'd get another Poi if I could. As far as parrots go, quiet too! Although quiet is relative, any parrot can be noisy or loud to some people. Don't expect any parrot to be as quiet as a cat!
Pionus tend to be more reserved and cautious. Especially at first. They look before leaping, and study their surroundings.. and as you study them, they're studying YOU! Much in the way Eclectus do, or what I've heard of Greys? Many Pionus are hands off even when hand raised. About like an Amazon, Grey, or Eclectus in that regard. Like their close Amazon cousins, they usually show a clear warning before biting. Something that Poicephalus don't always do. Generally... FEMALE Pionus make easier going pets especially after maturity. Males may be more difficult to handle during hormonal seasons, and might be a little more aloof than females. A female might also be a little more willing to be petted than the average male. Hope that helps. Ask more if you have any questions!