Oh, I had always thought that daywear bows were not used for Bond as to keep it a wardrobe ident for M!
In the same way that Bond is never seen wearing tweed or dogtooth style suits, or three piece when around Q. (See Goldfinger for example) - again because that was the signature style of Mr Llewellyn as his character.
My Grandad had a formidable arsenal of bow ties and cravats alongside more contemporary style ties. He was the same generation as Mr Fleming and had a similar approach to style, esp his suits and accessories. - I learned a fair bit from him in this regard!
The daywear bow has come back a little in trendy fashion circles ICS, of course that has trends like skinny ties and drainpipe jeans. For me personally, I see the bow as a signature of eveningwear. It just seems to work!
