It's a piece of cake, it's done exactly as Jon has stated, I've got a USB pen drive filled with different BIOS profiles, and BIOS'es...
The only way you risk losing OcUK's profile is if you overwrite it...
All you do is connect the USB drive, then enter the BIOS, on the main screen press F11, and then it asks you where you want to save the profile, call the profile whatever you want, and then press enter.
::edit::
One thing to remember is, you can't use a BIOS profile from say F7 on F9e.. it just doesn't work at all, or at least it wouldn't for me...