I obviously like button down shorts with french cuffs, so that's why I had it made that way. Ive seen plenty of examples of it looking just right, so good enough for Cary Grant, good enough for me...and speaking of which found this article that addresses it...
"Yes, the legends are true: Cary Grant, that style icon, Hollywood favourite, transatlantic enunciator and second Greatest Male Star of All Time wore button-down shirts with French cuffs (at least a few times on camera). The Rules are clear in that this act was categorically wrong. Button-down shirts were originally sportswear and among the softest of collars, while French cuffs are stiffies best reserved for the loftiest of occasions and venues. Grant’s shirts, then, are menswear bastards — and yet, there they are. He chose them, he wore them, he didn’t give a damn. All this goes to show that The Rules can be broken with no great harm for the reputation of style icons"
(of course I cut off the end part where the writer takes a personal stab at them"
I also recall my father telling me about how when button down shirt became the rage , but couldn't afford to go out and buy new ones, so they would sew collar buttons onto older shirts (some of which had french cuffs) and it was fine back then.
As to Rod, yes it's just the way the shirt is sitting, plenty of tie gap

@Mike, good point I was about to make as well, some of the more "unquestionable" sources of mod clothing these days make them (DNA, AofL, etc), so it seems an acceptable thing.
It's all personal preference, and I have mine...some might lay outside of the circle of what consider mod, but I have yet to see the official rule book

@Chilli, I'll PM you the details outside of this thread. I think I had 4 made so far, but each case was different.