Congratulations on your new baby, you're gonna love it!!
Pros: They play all day, keep eachother busy, double the love and kisses double the entertainment. They are best friends and have so much fun together. When I have to leave them at home for a few hours I know they will be just fine and wont get loney if they have eachother.
Getting Missy a companion was the best desicion! My husband and I used tell eachother daily how glad we were we got a second yorkie
Cons: Potty training all over again.
How old is the new baby your bringing home and do you plan to get him neutered? Max was pretty good with potty training but we bought belly bands just incase. We didnt get him neutered until he was 10mo old and he learned to mark inside (thankfully he had belly bands on) at about 7-8mo old. He doenst mark anymore now that he is neutered. But I'd suggest you neuter him early before he learns that bad habit
as I've heard it can be a hard habit to break them of.