Klasse and Zaino are two different brands of the same type of product. I imagine you could try to use both, but can't think of any good reason to do so...
Neither company makes a wax, both are polymer sealants and are engineered to work with the other products the company offers. IMO, you should stick to one or the other. I have Klasse, and it's everything it's purported to be...
hth,
Robert