Ooh, some Öhlins bling, Paul. I trust you'll be posting pictures.
I wasn't aware that the Paul Smart shock fitted the Evo but looking at the layout of the unit, I don't think the piggy back reservoir will fit in the swinging arm mount. If that's the case, then you'll have to mount it with the reservoir on top à la Paul Smart. It does mean that you can't adjust the preload in situ, so don't replace your hugger and exhaust until you're happy with the sag.
My DU432 also has the preload collars at the top but I've not had cause to adjust it since setting it up on installation.
Looking forward to seeing it fitted.