Nandroid backup for the G3, is it "safe" (CloudyG3 2.5, TWRP)?

Hi Guys,

I need to return my G3 for fixing the bezel crack under warranty.

Assuming that I'll get the same device back, is it safe to do a Nandroid backup with TWRP (v2.8.7.0), return the device to stock and when I'll get it back do a restore to the backup?

Can it cause a "weird" problems (I know from experience that other brands are ok with nand backup&restore)?

Thanks