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' full name is Klaus B. Baudelaire.
Klaus Nomi's birth name is Klaus Sperber.
Klaus Renft's birth name is Klaus Jentzsch.
Klaus Salin's birth name is Klaus Torsten Salin.
Klaus Nielsen's birth name is Klaus Scharling Nielsen.
Klaus Jacobs's birth name is Klaus J. Jacobs.
Klaus Zmorek's birth name is Klaus H. Zmorek.
Klaus Wille's birth name is Klaus Peter Wille.
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 Aichholzer's birth name is Klaus Aichholzer.