What I find interesting about this trackpad/mouse/touchscreen argument is that apple in the not so distant past have openly criticised the need to reach for the touchscreen while using a keyboard. Usually referencing the Surface Pro in comparison to MacBooks. Now that they sell a keyboard for their iPad Pros it's the future of computing.
I don't care, I'm buying an iPad Pro today, but I do wish I could use a mouse with it for certain applications. (I'll probably get a Citrix X1 mouse for Remote Desktop work.)
This.
I've been using the iPad pro 12.9 and 9.7 for about a year now. Got the 12.9'' when it came out and the 9.7'' when it came out this year.
I can truly say that the biggest issue of the iPad pro is the lack of mouse / trackpad support for the sole reason that reaching out to the screen so frequently when trying to be productive for more than a few minutes of work is not only not productive but also pretty physically tasking on the hand. Lifting your hand to reach and touch the screen every few seconds on a 12.9'' display is extremely tasking on the shoulders and the hand itself (and this is coming from a person who works 60 minutes at the gym, daily).
This is more manageable on the 9.7'' version but still not as convenient as using a mouse or trackpad.
I even tried to use the Pencil instead of my finger to touch the screen (thus the distance is shorter) and it is still pretty tasking on the body (though far better).
Until they add mouse / trackpad support, i just don't see how this is replacing a computer or meant to be a serious productivity device any time soon.
Other than that, it's a great device offering some huge potential.
To counter this i decided to check Google' Chromebook Pixel and just finished a month using it, loaded the beta with Android apps on it and i have to say that google has something going for them here, even while in beta.
This thing supports touch, mouse, trackpad, external monitor(s), great browser, a real file system and now mobile apps as well. It can do anything that the iPad Pro can only better and much less tasking on the body. Whatever Chrome is not able to do, Android apps are there to complete the task.
With the addition of android apps, you can now RDP to windows servers, FTP to servers and do anything that android apps can. Yes, it is still a bit buggy but runs great for the most part.
It boots up in 4 seconds from complete power off state, has insane battery life and it's not Windows (thank god). I have been taking my Chromebook with me to the office instead of my Mac for the last two weeks and there was nothing i was not able to do.
I'm sure that it's only a matter of time until true convertibles with proper specs running ChromeOS will be out (i.e. with a detachable keyboard and a touch screen) and those are going to be a true laptop/computer replacements (all in one device). I'm starting to think this is the true mobile / desktop hybrid many people will feel comfortable with.
Sorry for my English, it's not my native language.