Hello. Welcome. I ride a folder and a tandem but my tandem is not a folder. As it happens we are upgrading to a much better tandem but it will not fold either! Despite how much I love the folding aspect there are realities to face. It would not be possible on your budget to buy a folding tandem that your B.F. would find acceptable. Even you would probably find the Workman unacceptably wobbly and heavy. If you post your question on the Tandem forum you will probably find that the consensus is that one cannot find a tandem period that is 'acceptable' for less than $1000.00 My single folder costs more than what you are contemplating for your folding tandem and it is 'middling' in performance as single folders go. If I wanted a folding tandem I would absolutely buy the Bike Friday. There is IMO nothing else worth even thinking about.

H