Using SparkR and Sparklyr simultaneously

Question

As far as I understood, those two packages provide similar but mostly different wrapper functions for Apache Spark. Sparklyr is newer and still needs to grow in the scope of functionality. I therefore think that one currently needs to use both packages to get the full scope of functionality.

As both packages essentially wrap references to Java instances of scala classes, it should be possible to use the packages in parallel, I guess. But is it actually possible? What are your best practices?