Well not fully combining, but being able to do A/B comparison via SmartLink between my two stations.
I did lengthy write up at http://k9zw.wordpress.com with a maps and stuff. https://k9zw.wordpress.com/2017/08/03/remoting-via-smartsdr-and-smartlink-v2-0-both-my-stations-are-...
In a nutshell I was able to sit at a friend's shack, using his Flex-6300 while remoting alternating between my North and South QTH's shacks working other stations, including DX.
Someday I hope to be able to recombine the stations into a "virtual shack" but this is a HUGE move in the right direction.
Kudos to FRS!