I think those styling ideas are good. Moving towards spring, you could also casualize them a little with your denim shirt or a denim jacket over something fresh and bright. You know...in March and early April, when the stores are shouting "spring!!" but our world is still cold enough for wool. The only trouble is that it is also slushy then. But this would be for your driving days.
Gosh, I'm talking mySELF into these darn trousers!!
In a way I think wool is safest, too. Did you iron them first? If you didn't, then maybe ironing would help us get a slightly better sense.
I don't think you look wide in either of them.
Examining them more closely, I think I actually prefer the fit of the Martin. There seems to be less creasing in the crotch area and the waistband curves nicely. I might have been somewhat influenced by the button on those, which I don't care for; I know in reality you would cover either with a top or your belt.
OTOH, the monogram look really nice from the back and seem more opaque somehow.
I am about to perform an experiment handwashing some trousers that have rayon in them. I refuse to dry clean. So stay tuned.