I understand that, but this is no longer the place to expand for an answer. The regulars were very critical about Nanoha stuff and if there was an announcement, we were quick to confirm it.
Now that we've been chased out, there's no one here doing that. You'll end up getting conflicting answers, like you did with your A La Carte question--and for the record, there's been nothing to confirm the canonicity of A La Carte.
I have no idea if the same holds true for ViVid Life, but you've already got a conflicting answer there.
Then keep said trait to yourself and use the official name publicly. Otherwise new people, rare as that might be, may think you're referring to someone else and we have enough trouble with people spreading misinformation, deliberate or otherwise, around on the net.
Already explained i first related to the character as Carter Grendel, so that's how i know and feel connected with him, it's almost as if suddenly turns out Hayate's official name is Florence, it just wont cut out for me because i already acceted her as Hayate xDU
So yeah, i know Kurt is the official version. but i prefer Carter more. Everybody also knows you guys are right so it's just a harmless trait i decided to adopt