Right now, it will not work on the Trig/King transponders. The data output is a bit non-standard because we wanted the GPS to also be a great GPS for SkyView as a whole, not just ADS-B compliance. We are working with other vendors to see if they can add support for our data format, but there are also some challenges due to the baud rates we use.
Since the SV-GPS-2020 does not use Garmin's proprietary and unpublished ADS-B+ data format it is unlikely to ever work with their products. That's up to Garmin though.