I don't know, depends on your job. You could be a creative or work in entertainment in which case it's perfectly fine to wear for interviews or work.....you may also like dressing flash.Ozwald makes some very interesting and clever suits, but basically none of them is practical for office or interview attire. If you're the sort who has a lot of money to spend on something totally flashy and totally impractical, then go for it. If you own a Ferrari but live in city full of heavy, stop-and-go traffic, you're the target customer.
I suppose you could always visit Ozwald Boateng to get a plain, standard-issue navy suit made for yourself. But what would be the point of that? You don't go to Ozwald for practicality; you go to him because you're rich and want to buy a conversation piece.
It is not uncommon for newly minted partners at law firms or MDs at investment banks to get Boateng suits as ways of announcing to their peers that they have arrived. But if you're the sort of person who has yet to "arrive," your money is better spent on more practical clothing.