Looks like stealth summer business dress. You get the comfort and coolness of cotton without the obvious look of poplin or seersucker. I'm not exactly sure what "capri cotton" is, but if Oxxford did it then I can't imagine it could be bad. Keep an eye on it and you might get a steal on it.
Keep in mind cotton is not as receptive to repeated alterations, particularly being let out, as wool is. Once the trouser waist is adjusted the first time that's going to be it.