Mine was painted lo-o-o-o-ng before I bought it. Badly. The stuff came off in sheets, apart from where for some reason the paint was applied properly, where it just looks like dirty Hypalon.
On the "better vs not" argument mine are now down to the fibre in places (as I discovered when I peeled the flaking paint), so I am going to paint it eventually, because even a paint job will look better than it does at the moment. (A few on here who have seen Wildheart will know what I'm on about)
......Unless I win the lottery tomorrow in which case I'll just retoob it!