Not quite so crisp as Lesser 13oz, filling much the same role.Whether it is as durable, I couldn't say. Chances are by the time you know for sure, you'll have changed size or have moved six feet under.
Ask your tailor how much cloth is needed to make trousers for you. Should be between 1.5 and 2m, depending on your size and his cut. Then order the cloth, and deliver it to the shop, assuming they are willing to use your own fabric. Do check on that first.