I have a sumo and I am considering a PO in 43.5mm but slightly concerned with the size. The sumo is already a chunky watch and the PO is a good 3.5mm or so thicker than the sumo. I have tried the PO on in the boutique but it is really hard to tell how it fits by just putting it on my wrist with an unsized bracelet for 5 minutes. Does anyone have both and can comment on the wearability of the PO in comparison with the sumo?