Oh Yeah! We have to watch them all the time. They are warming up to each other each day though. We are in the process of moving to a bigger place with a better yard, so I hope they can both adjust. Although I am worried about the humongous Collie that lives across the street. If he wanted to, he could eat both of my puppies in one gulp. But, we plan to eventually get a fence up.
I'm sure you miss Snowy soooooooo much! But, I'm sure the time will pass quickly! :0) And like you said, you have custody 2x a month!!!! Which isn't so bad. Good Luck!!!