I like it, but I wouldn't use it myself. To me it just doesn't sound like a kid. It sounds good as a teenager or an adult, but I can't really see it on a kid... "Hey
Jarvis, want to play tag... Give the barbie back to your sister,
Jarvis.... Hey
Jarvis, let's go get ice cream..." Nah.
He would need a nicname while he was little in my opinion.