Wow, I was not aware that BetterTouchTool offers such a trick with contextual menu. Thank you, that's exactly what I was looking for.
I already use BTT with trackpad and keyboard, but juliosecco provided nice trick to use it more efficiently with a mouse.
And Mx Master is simply amazing. I use it only for a week, and it already made great impact on my productivity.
Lots of programmable buttons, 3 of them can be used for jestures (not the BTT kind of jesture, but click + direction, which is more convenient). Every direction is customizable too! And of course, both scroll wheels are perfect.