Hi Venom, that looks perfect - just the sort of thing I was after. If you send me your email address or phone number I will contact you about getting it up here if thats Ok? Might be able to get down to collect it but not sure - how best do you want the £20 for postage?
As for the Facebook post of your tr1ke it was by Elaine Couse - do you know her?
This is my option! I have a pair of these, one for each side. They are removable fore every day use
Have you reconsidered to place the top case in between the airbox and plate? seems to be a reasonable location if you happen to have the chasis recoated and have some fixing points welded
To be honest, these are almost the same panniers i was going to fit, and might still fit, in the same location, because they are on the Campagna T-Rex trike, and look great on that. I fancied the E41 ones.