You may have noticed that very few videogames have mirrors.
This is because they have a big* impact on performance. Basically the game has to render 1 more scene for each mirror.**
So, I'm not sure you will see them anytime soon on a SRV.
* Depending on optimisations ( lower resolution, less details, updated once every x frames, etc... )
** with current triangle rasterization tech. Once we have raytracing graphics cards, it will be different