IMO it really depends on the rest of the wood.
Take a George Lynch Kamikaze - Maple body, maple neck, ebony fretboard... :? way too bright.
I even think the Gibson LesPaul custom is a bit too bright with a maple neck and ebony fretboard, despite the bigger mahogany body.
IMO mahogany necks with ebony fretboards worked really well OR maple necks with rosewood fretboards, but that's just a bit my own limited observation.