The new version of the custom replacement board (2 variants) is out. There's also a basic Arduino firmware with tons of features demonstrating most hardware comonents, drawing about 1000µA in dualMode (BLE central and peripheral active at the same time).

https://github.com/BigCorvus/SMA-Q2_replacement_board_v2

https://github.com/BigCorvus/SMA-Q2-nrf52840-dualMode-firmware