Can Exilis and Ultherapy be used together?

There has always been stubborn fat in the lower half of my cheeks. This fat has begun to jowl quite a bit, creating an even more angular/chubbier looking face. I've been recommended Ulthera to help with the sagging and to lift up that area of my face from the loss of volume. But i've been reading up on Exilis and it's fat-melting properties. I want the benefits of both and a slimmer (v-like) jawline. Is it possible to get the two at the same time? Or which one should I get first?