WordPress multisite only has one table for users, so yes, users can use the same account on both sites. You will just have to be sure to set the appropriate role on each site, as network users are not necessarily users of a given site.
WordPress multisite only has one table for users, so yes, users can use the same account on both sites. You will just have to be sure to set the appropriate role on each site, as network users are not necessarily users of a given site.