Network users in mixed desktop and portable environment: Best Practices

Hello,

When using Server 4.0 in a network that includes both Mac desktops and Macbook devices, what is the recommended setup for network users and their Home directories?

The environment I'm building would best be suited for a "Local Only" Home folder setup due to the frequent use of large files, such as iPhoto stores, by many users. However, how does that function with the portables? When on the network, the user has all files accessible locally, but once off site, the user is not available. I know that a user may be converted into a Mobile Account so that it is available both on and off the network. However, my understanding is that this is more suited for syncing Home folder, i.e. when the Home folder is on a network share. Will a mobile account also function this a "Local Only" Home folder setup?

Essentially, I'm using the server to manage network users, not to serve files for the Home directories.

Thank you.