Ma c'è davvero molta differenza tra uno e l'altro? (motivi "legali a parte")

Io ho la versione N810, stasera provo a installare.

Is there really a difference between the two, apart from legal reasons? I have the N810 version (really don't want to reflash another time, until all gets really official), tonight I'll try to install Skype and see if it works