I am looking to make the Simplicity men's trouser pattern, but I can't figure out which size to cut. DH's true waist measurement is larger than his hip measurement, so which one is more important for the cut of the trousers? I
Even today, men's tailored trouser patterns are drafted based on the hip size, then adjusted to fit the waist. Unless this pattern is specifically drafted for "stout fellows" you are probably going to have to not only take in the hips, but reduce the rise.
If you would be interested in a custom drafted trouser pattern using DeVere's 1866 system, send me a PM.