Been a few developments in the last 4 and half years.
My monster Bloodstone is still around, had it in a custom build from last Summer. Few months later I swapped in the Herrick multi coil, nice enough but as always no drastic change.
Both now reside in the parts box, replaced by the one below right.
Stumbled across them on eBay/Ali-Ex while hunting for a Musicmaster pickup.
Staggered pole came from eBay, seller (7th Songs) gives you various options for poles and string wrap. Cost £18 and is a very nicely built 'vintage' single coil, fibre flatwork/cloth push up wire/Alnico 5 magnets/ wax potted/ 6.8k ohm DCR and comes with foam pad, springs/tubing and both wood/machine screws. Raised pole for A threw string balance out, likely fixable by adjusting string height but the 2 saddle bridges I favour are limited in that respect.
Flat pole model came from Ali-Ex (Shenzhen Finger Musical Instruments). Though I can't say for certain it and the staggered pole came from the same factory I'd take that bet, they're identical in every respect bar the poles 🙂 This one cost an astounding £10 inc VAT and shipping .