This is available now through American Express Platinum. What is the appeal?
True and I have used it with Amex, but I'd like to downgrade my Amex since I use it so little these days. Also, last time I tried to use it with Amex on BA the Amex travel agent insisted (argued no less) my home airport was not a gateway (which it most certainly is) for the 2-for-1 with BA.
At times the 2-for-1 has been cheaper than two discount fares. BA has flights non-stop to Europe from my home airport. Having the option to 2-for-1 when discount premium cabin fares are hard to come by is the appeal especially when I kill my amex plat card.