How to paint through the mesh during weight painting More often than not when I do weight-painting, weights on a model are the same/similar through the whole mesh (for example leg, arm), but weight painting has culling which prevents paint to go through the model and affects only visible part. To rotate around mesh for painting is often less precise and is always time consuming.

How can I switch culling off and be able to paint through the whole mesh during weight paint (similar to texture paint with Tools -> ProjectPaint -> Occlude, Cull, Normal all set to Off)?
You can do this by deselecting Limit selection to visible from the header. You should now be able to paint through the entire mesh. It doesn't update the opposite side in realtime however as it does when painting, it updates when you release the mouse.