That opaque sounds good Splinter, however, you'd still need to realise the situation to flip it. 

However, you've now got me thinking that I could put the smart switch on a time-off cycle (though it'd have to be continually changed as the daylight expands/shrinks.

I though that auto switching the light odd when I'm in the shop would be a PITA, however, on hindsight, I'd be in the shop, can voice activate it and ensure the blind is down.

I might go and set it to 5:00pm off (to cover winter or just leave the blinds down) and in summer it would be a reminder to check the blind.

Thanks for the heads up... will look into smart blinds.

As for Alaxa, I swear at her more than SWMBO does with me.

If your first cut is too short... Take the second cut from the longer end... LBD