Not sure why would you want K2Connect for SQL Server? You can already use SmartBox Smart Objects that get data from SQL server, OR you can use the Dynamic SQL Service Object found on Blackmarket to retreive data from your custom SQL DBs.

Theoretically you can create many service addapters for K2 Connect that could also connect to SQL Server, but at the moment Connect is aimed more at the more difficult to integrate with data sources such as SAP. SQL Server already has many ways to get data into your smart objects, so it's not one of them.

Regards,