Ya, it’s a bitch to resolve all the conflicts.
I was never happy with default blender poly/mesh selecting hotkeys, so in my case I reorganized everything. I have almost everything bound to some combo of the 3 mouse buttons plus the CTRL/ALT/SHIFT modifier keys.
If you haven’t already, consider adding the great Raycast Selection addon from @darcvizer to enable a proper “Paint Selection” in blender 2.80. In my setup it’s on MMB (and SHIFT+MMB; CTRL+SHIFT+MMB)