I have been using the skill and the emulator for a week or two now with no hiccups.
I turned off the emulator and removed all links from the echo. After adding ISY to the connected home tab it would still not detect devices that were set up on the portal. The fix that ended up working for me was to define "My preferred ISY:" in the portal. I only have one ISY connect to the portal and had never defined that field before.
Well done guys!