UPDATE TO THE BELOW: Had a magical moment while using the v6 WIP, when the 3D mouse on-hover would make the viewports switch automatically. Then it went away. (sad face)
The older original post:
Any spacemouse users out there find a way to have their funky little thing auto-detect the viewport on hover, the same as a regular mouse does it? (i.e. when you move your mouse over a viewport, you can just zoom in with the scroll wheel without having to select the viewport’s tab to make it the current/active one.