Nearly a perfect episode.
The only thing that bought down this episode at all for me was that the flashbacks to the O Soba mask bath house episodes were a bit lengthy. Aside from that, everything was pretty much on point.
Although the action animation in the beginning of the episode wasn't particularly impressive, it was serviceable enough, and well directed. Nagamine seriously deserves props for making an episode that could go between chill and intense on a beat. All the scenes landed effectively. Nagamine likes his eye shots, as well as having the camera shift focus to make his scenes more engaging, and it worked for the most part(again, the overly lengthy 932 flashback being the only real drawback for the episode, and even then, only the first lengthy cutaway particularly bothered me at all).
I particularly enjoyed the Udon filler surprisingly enough. I loved the animation in the bear man fight, and the anime has done a good job hinting about what Luffy is trying to do.
The scenes that really stole the show though was obviously Zoro vs Kamazou, which had quiet possible Katsumi Ishizuka's most impressive piece of animation ever, and thats saying something. I could not be more delighted with it. The stuff leading up to it in the second half was also well done.
Overall, the anime is smartly handling how it spreads out action inbetween narrative beats, just as I hoped they would.
Next episode looks like it'll be good as well, with Tu Yong Ce seeming to appear in the preview.