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To be honest I don't think it's that big of an issue to do it or have it done.
I will try no to be overly sensible, but if it's either
several thousand pounds down the drain, a holiday ruined and potentially a few hundred miles to walk back to the airport
Or
£347 for the rear hub
Or a black £25 hub that fits the bill. I would probably pick the latter and try to avoid it in my vacation pictures. ;)
That did cross my mind, but doing it myself would be a massive PITA and organising someone else to do it would probably end up being nearly as bad. Velosolo stopped doing polished Shimano hubs due to the grief they had trying to source them.