Re: Wrong Tablet
No downvotes from me, but it your post does ask us to define terms - what s a laptop, what is a tablet?
The variables - external ports, OS, keyboard, CPU architecture - have been lumped together through historical accidents. There is no inherent reason why an ARM device couldn't be given more ports and a OS that is happy to do work. There just isn't much of a reason to do so, though.
The people who want to write and deal with photos on an SD card already have an x86 laptop, so it means that there is little incentive for software devs to make ARM tablets do the same.
The Surface Pro 3 is an interesting device. However, when travelling one still has to pack its keyboard, so there is no weight/bulk saving there. I've looked at CAD forums to see how the Surface Pro behaves as a Solidworks machine... "not too badly but bring your proper mouse" was the view!