We have had Porties for over thirty years. They do like a lot of attention and need supervision as they are pretty busy. Ours are constantly with my wife, if she is not giving them attention when they want it they will come looking for me as I am second best in their books.Two? Lucky guy. We'd love another but our little guy has lots of anxiety issues. He would not do well with competition for my wife's attention.
Porties rock. Although I always smile when I think how smart and mischievous they can be. I can't count the number of times I've had to relate how this happened, or that happened, always prefaced by the phrase, "Sadly, he was unattended at the time..".
An unsupervised Portie is never a good idea, but always an entertaining one.