dagger tattoo

I've never seen a horizontal dagger, either, but your choice.

I am not into tattoo, but your question made me curious. So I started to look at pictures and several really look nice.
When you look at the shape of your body it is natural that daggers are vertical.
Guess your body is now the one of a young person.
What is a horzontal dagger going to look like in few years when your skin get loose or you get "fatter" Is then vertical safer?