It was a painless experience at the UK end — apart from the last-minute rush to get everything sealed and labelled before the courier arrived to pick the boxes up — as everything's coordinated by Excess Baggage.
But at the US end, everything slows down; and you have to deal with the US importing agent yourself. The boxes landed in Los Angeles on the 27th last month; took another week to clear through customes; and then took most of this week playing phone tag with the agents to arrange a delivery date through their couriers.
All appears intact, but the boxes certainly look well-travelled; battered and covered in routing labels.
So that's that; everything we own is here now.