Great stuff!
Really looking forward to being able to send, receive and view geometry with attributes in an intuitive manner between Rhino, Grasshopper and the Speckle Viewer. Right now it is very complicated to wrap your head around the way it works right imho, which impedes adoption of Speckle within my Computational Design team, let alone among engineers. And this is such a shame, because Speckle is mega amazing 
As @jonathon kindly suggested in Speckle in GH / Custom Properties - #20 by jonathon, I was / am planning to make a feature idea post, which I started to write up here: Making working with Speckle Objects in Grasshopper (more) intuitive
I didn’t post it yet though, because I have the idea that my explanation is still a bit convoluted and haven’t had time to improve it. I did have a call with @gokermu about this topic though, thanks for your time! 
In case you think that my Making working with Speckle Objects in Grasshopper (more) intuitive write-up is understandable enough already, I could post it.