42mm isn’t bad, but the argument for the size is nonesense. Audemars Piguet has 41mm ceramic; IWC should without a doubt be able to follow suit or even surpass by making 40mm ceramic.
And I am still wondering how they haven’t fixed the bracelet with a micro adjustment function akin to the Overseas by Vacheron Constantin - the watch is named Ingenieur; they should make sure it feels worthy of the name.