Not for me. If you go to No Man's site and look at the bottom sole measurements for their P2 lasted Vass you'll notice that a 41.5 is the same length of a US9.5 tts dress shoe. To get into an Alt Wein I had to go up to a 43 because of how narrow the shoe would fit. I would have more than an inch left in the front and the shoe would break really weird. The F last was definitely wider.