I've never heard about Siamese building a strong bond with one person and then being jealous.
IME (of both my own and my parents' cats) they are total tarts - looking for whoever will stroke them! In fact. we do have a problem with them looking for cuddles from one friend who doesn't like cats - but he learnt to tolerate them (we keep trying to explain to him that his human reaction of "fear/dislike", narrowing his eyes is that cat equivalent of a "come on" as they think that means "come to me, I am not a threat")
They are more vocal than other cats - in that you can actually hear them miaow (to me "ordinary" cat miaows seem pretty pathetic). In practice though, they only tend to miaow if they have been stuck in a room or are really hungry. The really noisy "calling" is from cats that have not been "done".
Both male cats we have had were/are wonderfully malleable. The various nicknames that they have had include "squrrel cat" (as they like lying on their sides with their paws up), "plaster" and "softy". They demand to cuddled and respond really well.
All the female cats have been very affectionate although slightly less malleable - although our previous female could be a bit of a pain as she would take forever to settle. The current one is very quick to sit on your lap - in fact so much so you don't even notice she has done it.
I find the female cats (n my vast expereince of 4 - two of my own and two of my parents) slighlty more "on their own terms" than the male cats (over the years about 9 - 3 of my own and 6 or more of my parents).
All the cats we have had have tolerated (and even come back for more) being carried about, petted and generally mauled about by young children. If they don't like it, they just disappear (now if an adult tries the same thing........ )
I beleive that with longer hair cats, if you are going to let them out, you have to be prapred to do a lot of grooming. Can't really comment though as I have never had a long haired cat.
When we bought our first pair, we did deliberately not choose the kittens that came from a home with no men around as we were worried that they might have difficulties with my dh - epscailly as Siamese are normally so strongly "people" cats. Not sure it really would have been an issue - but I am glad we chose the breeders that we did as they have become long term friends.