is there a way to sync 2 different blackberries (both are 8330 Curves) using Pocketmac on the same computer, but so they can sync independently of each other - i.e. so only my contacts and calendar will sync to mine, and my husband's to his?

Only if you have 2 users on your MAC

is there an easy way to create 2 users on the mac?

System Preferences/Accounts. Takes 1 min

ok so both users are on the Mac...now what? I didn't see anything on Pocketmac that specified a user.

You either log on to your Mac as user 1 or user 2. That way, you will have your separate Calendars, Mail, and settings in most other programs. Pocketmac sync will do the same.