I think the fact that everyone had them might be the problem - In my case I had (I think) three different pairs of Arayas BITD on Burners and such - every set got trashed, bent and generally abused and then binned. The stuff that wasn't common I guess has sat around waiting for the likes of us to waste the housekeeping on
You are right about few people riding UKAIs - like Aero Reflexes F&Fs - they existed for me only in the adverts in BMX Action Bike.