NetDrive2 would be an awesome app to be portable. You could use this on a WinPE USB to do remote restores while on site if you have backups stored on a server. Even better if you have a personal FTP server you could restore bare metal from anywhere in the world. You have your backup/recovery software (i.e. HD Clone 6) on the USB in PE and remote connect the FTP Site as a network drive. Then just run your restore like its a local network or local physical drive connected. Better than most paid options out there because it includes bare metal restores, which if you make NetDrive2 portable will include the ability to do it from anywhere in the world with the proper setup.