Dear Smitty, The pickup arrived on Thursday, that was really quick! And no big issues with customs offices.
I brought it to the luthier and he was curious himself, so he had it done within an hour and I took it back with me the same day. I tested it yesterday and adjusted the screws and everything. It sounds great, I love it and wouldn’t know what to complain about! So thanks a lot for the great service and the final pickup itself – I will surely enjoy playing the guitar in a band setting with this.