Domain-specific languages (DSLs) improve engineering productivity through powerful abstractions and automation. To support the development of DSLs, the software language engineering (SLE) community has produced various solutions for the systematic engineering of DSLs that manifest in language workbenches. In this paper, we investigate the applicability of the language workbenches GEMOC Studio and MontiCore to the MDETools'17 ROVER challenge. To this effect, we refine the challenge's requirements and show how GEMOC Studio and MontiCore can be leveraged to engineer a Rover-specific DSL by reusing existing DSLs and tooling of GEMOC Studio and MontiCore. Through this, we reflect on the SLE state of the art, detail capabilities of the two workbenches focusing particularly on language reuse support, and sketch how modelers can approach Rover programming with modern modeling tools.