Just wanted to pass a few other bits of information I have found.
The life of the S Pro 2 is very dependent on the amount of screen brightness being used, I was using a bit too much during the brighter daylight hours where I could not use a sunshade like Ken's due to wind. I just created a icon of the display tab on the main screen so I can easily get to it and make the adjustments.
If you let the Phase One battery in camera get below 15%, then you possibly will run into a situation where the image being shown on the LCD of the back will not be written to the tethered PC. You need to remember to listen for the beep, as if you get the beep, the image is on the PC. As the battery in the back gets low you will see a warning, but it is much more subtle since the battery lasts much longer while tethered, if you allow for a low charge from the PC.
Remember to turn off your wireless in the field, as it will continue to search while you are in the woods and that does take a bit of the battery.
I loaded webroot anti virus, and it will eventually try to give you a notice about the software needed for tethering loading each time you "sleep" the PC. This becomes a bit of a bother, so now I just turn Webroot off. Still can't find a way to totally kill it as the service runs in the background and takes 15% of your ram. Working on that.
I purchased a SSD 240GB from MyDigitalSSD, This is the smaller form factor of drives, not the 2.5" hard cased ones that I was familiar with. This drive is tiny and USB3 and will copy 12GB of tethered captures in about 12 sec, much faster than any card, but having the card is still a nice additional feature.
My S pro 2 keyboard does some strange things, mainly the mouse or keys will stop working. I can still use the keyboard on the screen, but I can't recover the keyboard until I sleep the PC. The mouse pad on the keyboard is a bit frustrating also but slowly I am learning it's little issues.
NOTE to Self, don't carry the S Pro 2 in your backpack in sleep mode in a plastic bag. It will get way too hot. If you are wanted to protect it from a water crossing, then go ahead and turn it totally off.
I neat workflow I have started is to setup with the S Pro 2, to get my scene focus all figured out. Once I have that done, I can sleep or turn off the S Pro 2 and shoot to the card. This just lets the S Pro last longer for a full day. I caught an error while shifting the other day with my 40mm, that I would have missed if viewing on the back's LCD. The images taken with the tethered solution will have the prefix Capture in front of them, so if you move the mixed images to one folder they might be out of series since the Capture prefix may make those images show first. The actual image number will still be in series, so if there is a way to order by image number all the files will line up correctly. (using name will not work as the Capture prefix will line up the images with Capture 1st, due to the C)
I purchased a couple of extra tablet pointers as they tend to get lost. I only figured out after 2 trips that the pointer fits into the same spot as the charger, (should have caught that sooner), but if I pick up the S Pro2 from the Ackron mount, I tend to grab it from the sides, then thus the pointer tends to drop on the ground.
For some reason, my Ackron seems to hold the S Pro 2 better when the word Ackron is upside down.
As a footnote, I was shooting the other day testing out a lens, and decided to go non-tethered. I was amazed at how fast I had gotten used to the screen on the S Pro2, how much faster it was to zoom and move around the file when viewed at 100%. I would have never believed that before. Sure the LCD is great, but the ability to see the raw at 100% view in C1 is really priceless. It's sad that the P65+ never came out with USB3 as it would be a great case for tethered work, as you could totally bypass the LCD on the back, which was pretty worthless IMO. Sadly the S Pro2 only has the USB3 port, not sure if there is any USB3 to Fireware connector.
Paul