There is a study showing that "Novices play better golf when they have expensive brand name equipment, research shows. Brand name products alleviate some performance anxiety but brands have no effect on better players."
It may well be the other way around with pens and writing--I think. Experts may benefit more from their favorite tools than novices.
In any case, this "phenomenon" also deserves a study--or so I would argue!
1. See here.