Makes sense, thank you for the information!
I've actually had the cable replaced once with Westone US, which went relatively well.
In truth I'm not all that happy with the company in general. They offer another year of warranty but if and only if you send them the registration card in the box, which you cannot get from anywhere if you happen to lose it (like I did). Naturally it was due to my carelessness but this kind of system sees archaic in this day and age.
In case anyone else is interested: Westone does have European presence these days (in Belgium). They charge 56.80eur (inc. taxes but no shipping) for cable replacement.