I'm still not fully convinced that the voicelines you choose during conversations are going to be voiced (I certianly hope so though), because I seem to remember that Larian also said that D:OS2 was going to have "full voiceacting", which it didn't.
So I think it would be great if someone from Larian could clarify if the conversation system we've seen so far is how it's going to be, or if the full voiceacting just hasn't been implemented yet.