This is interesting -- it flags one of the questions that occurs to me when this topic pops up periodically: "Assuming DWW is right that oxfords don't (usually) go with odd jackets, what's the point of full brogue oxfords?" Personally, I wouldn't wear them with a suit. But maybe that's just because, if I'm wearing a suit, I really mean to be "dressed up," so cap toes feel right. If full brogue oxfords don't work with an odd jacket either then it's hard to see when they're useful.
(Sort of relatedly, I've never been much of a fan of cap toe derbies either. Not sure why, just an idiosyncratic preference I think.)
what about casual suits? Cotton or brown linen, or tweed?