@Tailslol Yes, the driver is only a POC (Proof of concept), it is not intended to be used with any other systems.
Also, there will be no benefits of using Vulkan instead of GL from the rendering point of view. The rendering is only limited by the GPU capabilities. Vulkan makes no magics.
However, it seems the Vulkan API is natively designed to manage multi-core CPUs. That is, using a Vulkan driver would possibly decrease significantly the CPU bottleneck in some games/emulators.
When/If this driver becomes mature, some emulators supporting Vulkan APIs could get speeder and/or smoother
Just wait & see...