I once posted on TPF that I would never choose a fabric bag over a luscious leather... no way... not me... well, now I find myself fawning over the
Prada Nylon messenger! So your question is exactly what I was looking for on here. I do agree that if it's your dream bag it's worth it.
My head is more around functionality. I'm a Londoner and no stranger to surprise rain showers and need something to jump around buses and the underground with. Less precious but still VERY COOL. Then find myself thinking... pay a few hundred more (ok, ok... a thousand

...) and get yourself a scrumptious supple leather Celine...
Any one here have long term joy with a nylon messenger?