I think that's a positive. If anything, I'd probably rate the tailor higher after such an encounter. He could have easily indulged your request, knowing full well the end result would be problematic from a wear/durability standpoint. A business owner who takes a stance that essentially takes money out of his pocket so as to not potentially harm the customer is one worth frequenting, in my opinion.
I absolutely agree. I've been frequenting his establishment for a few years now (Cove here in Frankfurt) and everything about Herr Schmidt, his staff and his shop exudes style, class and competence. Anyone passing through town would be well advised to pay a visit.