For me it makes sense to bend and vibrato towards the centre of the neck. That is, pull E, A and D strings down and bend the bottom 3 up. I do find bending down easier 'though so I find myself wanting to go down with the G string also. B string not so much as amplitude is limited.
Hey Hovak, I wonder if you'd be interested in doing a vibrato video that covers bent-up vibrato. Any tips about not getting your finger/s to slide underneath adjacent strings would be helpful; I've always struggled with this. My skinny fingers have meant that I've always tried to get my guitars' action as low and possible to help avoid this, but with some guitars I can't get the action low-enough for reasons like slightly-bent necks and so on. Damned fingers slide under strings whenever I try to do an up bend. So frustrating!
I feel like I must be missing some trick or technique the pros use. Thanks man. Keep up the great work!