Default Nandroid

normally I'm very experienced in android, but now I have a little question.

When I started flashing Android-Phones, we used to flash nandroid-backups to install roms on our Lg-Gt540, only after some time we used to flash zips, like today.

I'll flash omni-rom to a locked non-routed orginal P6-International, which belongs to a friend of mine.

Can I simply unlock the phone, install Twrp-Kitkat and flash a nandroid-backup of my phone to this ?

Normally Nandroid doesn't backup imei and vo, but how is it with the P6 ?

Thank you for your help

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Huawei Ascend P6 - AOSPA 4.4.4
HTC Evo 3D - CM10.2 4.3.1 3.0.101-MiRaGe

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