Bangle GPS via GadgetBrdige - state of play ?

Hi I am vaguely aware that some work had been done to get GPS coordinates from GadgetBridge instead of the onboard GPS on the Bangle 2.

I'm just not sure how to use this and get it to work.

I thought there was some automatic detection that the GPS values were coming via GadhetBridge and therefore the Bangle.on('GPS', func) would return the phones GPS cooerdinates. I unsed the gpswidget to monitor if the gps was turned on at all.

Can someone summarise where this work is at.
As no one appears to have managed to get the Bange 2 gps into low power mode or pedestrian mode I am intrested if this solution works.

Thanks
Hugh