Steve, your thinking of a rubber hose with a stainless wire mesh covering, this is completely different to 'stainless hoses' being discussed here with no rubber involved.
As regards the other query, the problem of 'oil' contaminating Truma regs was originally blamed on it leaching out of rubber hoses, something those in the trade, who knew better, had a good laugh at!
But if you know no better and come up with an idea to replace rubber with stainless, then is that dishonest?