VR for mirror shaders is here. Based on Lit shader, so supports everything that it supports (lightmaps, shadows, texture, bump, emission, etc. everything is supported)

Oculus Rift, Rift-S and Quest are tested (Mirror in the mirror – recursive, does not work on VR yet!).
OpenVR and Vive are not supported yet!
Works for the orthographic camera too (depth-cutoff is not supported for ortho right now)!
Please see the forum HERE

You can create:
Full mirrors,
Reflective floors, walls,
Snowy (iced) roads,
Simple water simulations,
Refracted surfaces,
Blurred surfaces,
Rain (ripple) animations on masked or non-masked surfaces,
Alpha masked reflections,
Reflective glasses,
Full transparent reflections,
Depth based reflections and blur
Wave simulations (with mask) and much more…