I haven't used MS SQL Azure yet but it does appear there is an OData service for it which can be enabled and QVSource does have an OData connector.
If you would like to contact me directly we can work with you to make sure it's working with SQL Azure as expected.
have you read this: Microsoft JDBC Driver 3.0 for SQL Server and SQL Azure
I would expect that this would work directly with our QlikView JDBC Connector:
It's just a matter of configuration. I can give you some support on this. Would be very interesting for us if this works.