Ok, so after riding for about 15 months, and 1st years insurance never covered pillion, (does now), I took the missus out for a ride last night. 1st Time!
Steady at first as wasn't sure what to expect but bike felt solid and a hot road with a sticky tyre and extra weight meant that the tyre wasn't going anywhere! (Not that it would anyway under normal circumstances)
Gradually building speed getting used to it, was great fun!
She's been pillion on other bikes so she wasn't frightened. Arms round me rather than holding the grab rail. I could actually feel her leaning before me on the bends!
I noticed harder braking was needed but I knew that anyway and anticipated at every stop.
Dual Carriageway, clear road, I tapped her left hand and she grabbed tighter, hit the ton

. She said later she really enjoyed and felt safe, so that really re-assured me. I won't be doing that every time, mind!
Even when we got home at 8PM she wanted to go for some more. Which we did but had to come back at 9ish as I had Dark Visor and didn't wanna attract attention!
Remember you're first time?
(Note to self: remember to use both feet when stopping. One scary moment!

)