For me this is a good question as I spent most of my budget keeping my wife happy with the dual longhaul seat, sissy bar and pad. Nothing left in the budget to buy genuine triumph bags.
So what do people use for touring other than genuine triumph bags?
I have these http://www.tsukayu.com/Strong.htm
and the OEM sissy bar/luggage rack. As this is my 2 up bike, so being able to carry stuff is a neccessary.
Just got back from a 10 day road trip, carried everything I needed and some extras.
Daz - I think fast eddy has some of those bars you are looking at, specifically for the t-bird.