I am a professor in Singapore and just bought a IWC Portofino watch in April with stainless steel strap. Very soon, the strap is broken by itself. I went to the dealer, and they are charging me 120SGD for replacing the broken part.
I was very upsad, I spend 9000SGD for the watch, and the strap is so fragile and not covered by the warrantee. I am just planning to buy another watch, but now I will definitely not choose IWC. Such a bad experience.
So if you want to buy IWC, be careful.