Agree with the advice above on why you should just pick one... and I'll add another comment: based on my work with past clients, my understanding is that you HAVE to pick one or the other when you start your application. As in, you literally cannot do both because their application system makes you choose one or the other from the outset. I wouldn't want to be "that guy" who attempts to do a second profile to get around their system!
Hope that helps!