Hi, I saw a gorgeous photo of the Airmail/Wality 58SL. I also saw that it was being sold cheap on FPR. Very tempting! And the nib and feed are interchangeable with my Jaipur (which is pretty good, compared to a Wality in my Ranga) However, the gold components are gold-plated. Would anyone have a 58SL (or similar) and would like to comment on how the plating on the clip and the cap band has held-up with use? I know we can't expect a lot given how affordable the pen is, but I'm thinking of whether I should settle on the 58C (silver) even if I like its looks less, if those lesser looks will stay even with age. *Comments on the good buy-ness of the 58 is also appreciated!