We're using 3T Ergonova bars on the front of our tandems and all our singles. It think its a similar shape to Zipp's SL70 with 70mm of reach. The FSA has 80mm of reach. It would be the most common bar for Steve Hogg to put people on when their bars don't fit.
Just making the clydesdale category I use the aluminium bars. Riders who are more svelte than I would be fine on the Team carbon bars which Marian uses.
The LTD bars are for the "discerning individual" or weightweenies