I wear a US 14 in pretty much everything. I'm in a similar situation though, because I feel like as I'm getting older my feet are getting a little longer, especially my right foot. The Scarpas aren't the most generous on length. Both of these boots would be early season boots where I would wear a thin sock. If I were to try to wear a heavy wool sock, it would be too snug. If you're a true 14.5, they're probably going to be too small. The Plus is slightly wider than the Ribelle, so I would think the Tech would be about the same.