I like the look of it too, but I wish it was based on Counterparty.
I remember less then half year ago, many here thought SoG should be on Ethereum. Now it happened that ICONOMIC cant even issue and distribute their tooken on schedule. Things change fast in Crypto. I guess that is what BtV are counting on.
I guess it was good for SoG to stick to Counterparty.
Maybe there will be some SoG cards that could work with BtV and viceversa.
Not sure how it'll work technically between the 2 different blockchains... we can only wait and see.