I love this piece and wish it were played more, don't understand why more cellists don't insist on it.
I didn't really know it till just 3 years ago, when I heard it in a couple of the Chopin 200 year celebrations, including one by Yo-Yo Ma and Emanuel Ax, and probably hundreds of times since then on a CD of the other of them. (I loved the piece and that performance so much that with permission of the performers I posted it on youtube).
You both do great. To me it's a fully professional performance, with a nice Chopin feel and a good polonaise lilt. There's one thing I would have preferred very slightly differently and of course this is just a matter of taste: I would have liked the polonaise part to be a touch slower, to allow for still a bit more of the polonaise lilt -- but even at that rapid tempo, you've got that. It's great that you did this piece and I'm very glad you posted it.