It's a common expression, but it depends on the context. "A ver si nos vemos", he/she expects to meet you , but she/he isn't certain , an example might be the following:
You are going to a party , but it's a crowed place and all the students in the University are invited, you talk with a friend about it.
Amigo (your friend): Vas a la fiesta ? (Are you going to the party)
Tu (you): Sí , quizás vaya con unos amigos , a ver si nos vemos...(Yes, maybe I go with some friends , hope to find you there)
Amigo (your friend): Va, nos vemos allá (Yeah, right , see you there)
Because of it's a crowed place , it's not certain that you find her/him, but because of everybody is invited , you might meet her(him there..