We don't have defined anything special for laptop users.
We have two network mappings defined for all users which is done with logon script. These mappings are defined to be persistent, so even if user is off-site they still show up. First mapping is user's home directory and other is common DFS-share, which includes all other network resources what user would need.
Earlier we defined user's home directory in user account but that caused lot of problems when network wasn't available. That's why we now define that network drive with logon script and use GPO to redirect My Documents folder to that specific network drive. We have also defined this network drive (My documents) to be available offline for users.
I don't know if this helps you, but I thought that I would tell you how we have managed to get along.