In games where combat uses the bumpers a lot I bind the back buttons to that. For the rest of the games it depends on the what I find annoying to do repeatedly and end up mapping that to a back paddle.
For example on Breath of the Wild the back paddle was run which allowed me to run with one hand.
It definitely works if you are willing to tinker but we are a low priority and anything that breaks takes a long time to fix. There’s even another project called Envision which runs better than SteamVR but isn’t as easy to use yet.