I watched it today and have mixed feelings now. I was very eager to watch the traile with the original voices dub. Yes it feels nice to hear them on actual humans but I unexpectedly have a cringy feeling because I couldn't sync the image and the voices in my head. And without any doubt, technically considered, the lip sync is terribly bad.
On the other hand, if you consider that Oda created these characters based on different ethnic and cultural backgrounds, isn't it perhaps better if we decouple ourselves from the One Piece anime and review this as a new and unique live action adaptation of the manga? Honestly, Godoy has his own quality in his voice giving life to Luffy. The other characters too. With the Japanese dub I feel like a third, unsuited radio signal interfering in my brain.
Strange... I was totally hyped but now I'm deeply confused. Well, at worst I can watch it both
One more point: Here we can see how important it is for the actors to open the mouth properly when they speak! Just look at Buggy's scene at 1:27 where the lip sync fits perfectly. Okey he is screaming but look at the whole trailer with this in my mind and you'll notice what I mean in general.