I am! RiftSketch is great. We just rolled our own because we needed OpenGL 4.5 and access to visual studio code within the VR window. So our live coding framework is a native desktop app that uses V8 to bind javascript calls to C++ and OpenGL 4.5, and the windows desktop mirror API to render the desktop, and visual studio code along with it, in VR. Apart from the C++ core, virtually all aspects of the application can be modified at runtime by modifying the JS files and simply saving them. JS files are executed on save, and structured in a way so that they replace previously loaded functions with new ones.