Sunching Users Between Single Blogs within WP Multi Networks

Hi,
I have used WP Multi Networks plugin to create 2 networks A and B, and each one of those networks has several blogs within it (using multisite). Q; if I wish to synch the users of 1 single blog within network A, to 1 or more blogs within network B, can I install User Sync on the blog in network A (making that the master site) and then install User Sync on all the blogs on network B I wish to sync as slave sites? Or does simply enabling multisite and WP Multi Networks disable any functionality User Sync may have had?

All the best
Ed