Yes! it's unique and very foreign sounding. It's masculine. The only problem would probably be that most people would mistake it for "Claus" like Santa Claus.
Klaus Nomi's birth name is Klaus Sperber.
Klaus Renft's birth name is Klaus Jentzsch.
Klaus' full name is Klaus B. Baudelaire.
Klaus Wille's birth name is Klaus Peter Wille.
Klaus Salin's birth name is Klaus Torsten Salin.
Klaus Jacobs's birth name is Klaus J. Jacobs.
Anoushka Klaus's birth name is Anoushka Ruedi-Klaus.
Jason Klaus's birth name is Jason Eddins Klaus.
Kyle Klaus's birth name is Kyle Anthony Klaus.
Klaus Nielsen's birth name is Klaus Scharling Nielsen.
Klaus Zmorek's birth name is Klaus H. Zmorek.
Klaus Aichholzer's birth name is Klaus Aichholzer.