Greatings!
Has anybody used/been using a Genius/other tablet with Inkscape and benefit from pressure sensitivity?
I have a MousePen 8x6, showing in the input devices but whenever I drag the pen (tried in calligraphy) I get zooming in and pop-up menu in rapid susccession.
Of course, I can deactivate it and use the pen merely as a mouse but I want pressure sensitivity.

Yes, I think most people are able to use pressure sensitivity. I know of 2 options for pressure sensitivity, so you can make sure you have both of them set. One is Edit menu > Input Devices, near the bottom. And don't miss the Save button. The other is in Edit menu > Preferences > Input/Output > Input Devices, I think it's the 2nd to last option there.

I'm not a tablet user, so that's about all I could say. Oh also, I think there may be some options on the Calligraphy tool control bar that you might need to set, as well.

Thanks for the info. I tried all but still working as described above.

Well it seems the Genius tablet maybe have some problems with Inkscape: reported bugs

There might be some work-around mentioned in those reports, which might help you. I didn't read them all.