ah, my apologies everyone. Looking at the iOptron website I see that I must have the version #3550A with the electronic polarscope already fitted. This has a small camera behind the polarscope which makes polar alignment 'simple and fast' to quote their manual.
I would imagine that trying to do that visually on the SCP would be a major PITA...
The good news (although $$$ would be involved) is that you can upgrade the SGP to use the electronic device. See
https://astrobackyard.com/ioptron-ipolar-skyguider-pro/ for example.
I also concur that the WO wedge is a major improvement and helps to remove much of the frustration around aligning the SGP.