The ability to use SQL or NoSQL databases, as well as RDF data sources in one single tool makes it very powerful when you need lots of flexibility - but also easy enough if all your needs are simple CRUD operations with structured datasets (like relational database). It's still quite early days though so I'd be interested how that changes over time! There isn't much out there like this yet which allows me to combine multiple types of storage into my applications quickly & easily without having too many different pieces running at once.