I am reading your conversation and I would like to ask you.
I am also thinking in getting a P bass styled with a MM type pickup in the bridge. I was playing with the Maruszczyk configurator. I ended up with a Jake with Delando P and MM Pickups. But I realised that the configuration and price point ended up being quite close to that of a Sandberg California VM4 with very similar specs.
So I am wondering which one would be a better choice. Similar body shape, pickups and so on. Of course, thanks to the configurator the Marusckzyk allows to tune up the really minor things more to my liking (Sandberg has also their own cofigurator for all the important ones, but I think it is less comprehensive in the small details) but there is one thing I like more on the Sandbergs and are the reverse P configuration. Is it possible to order a Maruszczyk with a reverse P pickup?
Anyway, I think both companies could deliver a great bass with all the "important" features customized to my liking, so probably either direction would be a good choice.