I did exactly this about six months ago before there was a SmartThings/echo official integration, using the Hue bridge as the “man in the middle” between echo and smart things. It’s detailed as method two in the original echo integration thread.
The problem turned out to be lag. At that time it could take SmartThings as much as 15 minutes to poll the hue bridge for bulb status. That was a long time.
The current polling interval is every five minutes, which is better, but still may be too much for some cases.
So, sure, a Hue Bulb’s status is known to multiple controllers and you can use that for indirect communication. It just depends how quickly you need to sync everything up.