MrHorgy:
You get to chose your 'uniform' in an office environment within a certain bracket of clothing. Not everyone is in identical suits. If an airline wishes it's pilots to wear the same gash quality suits, it's a uniform in the more traditional sense, and should be supplied - if only to facilitate conformity from one supplier. If you're given leeway to turn up for work smartly dressed, I'd be down to the tailors and happy to fund that little trip myself...