You may have seen the good reviews, but I gave up after 50 pages, many of which look like this:
The premise is clever—the Civil War is averted and slavery persists in four states up to the present day—but the writing is not. One wishes to read instead Elmore Leonard, who is a master of the kind of style attempted here. Almost every page is overwritten. Many of the pieces in Martin Amis’s The War Against Cliche apply here too.