If those routes and carriers work for you, there's no reason you shouldn't transfer some points from you favorite credit card rewards program over to Virgin and book a great deal. (rewardexpert.com)
I was impressed by the pace at which they added reciprocal benefits for members, including the ability to status match and also transfer points between programs at a fair rate. (onemileatatime.boardingarea.com)
You can get around this limitation by transferring points between accounts. (rewardexpert.com)