Priest likes to subvert expectations. Here, we get a Captain America & The Falcon comic where the two protagonist aren't together, and might even be at odds, for three-quarters of the volume. 
 Priest likes to tell complex stories. That usually results in twisted chronologies, but here we instead get twisted identities. There are literally two (Captain) Americas, and figuring that out and discovering which is which is much of the first couple of issues. 
 What I find most amazing about this comic overall is how modern it feels. It's a post-9/11 comic, and even though it's just a few years past that date, Priest had already sussed out the growing gestalt of the America mindset: security over privacy, distrust over faith, injustice over lawfulness. This comic could have been written yesterday. It's still very relevant today. 
 PS: The 'roided out art sucks.