Justice, as in Mr
Justice Bloggs, is a title (for a judge) as well as an abstraction, so I really don't like the idea of using it as a name. Rather like calling someone
Prince or
Duke: pretentious and silly.
I know someone who is married to a
Justus; I've never met him, we live over a thousand miles apart, but it makes me familiar with the name. I wouldn't use it myself because there are so many names that I like better, but I find it quite acceptable.