My sister has a Pom and my brother recently got a Pom as well.
I will agree they are different than yorkies. Bella is protective, a comedian, loving, she likes to snuggle with my sister. Taffy my brother's Pom is a puppy still and developing we'll have to see how the little girl grows up, she's feisty. She barks at you when you don't pay attention to her. lol. I'll throw a picture in, this picture is of my brother's Pom puppy Taffy. Sorry about the quality of it, it was taken on my cell phone.