Hmmm, I don't seem to need a laptop/desktop replacement. I've got the Vivo RT, but you can assume it's a surface RT. I've had it for a few months, now, and it gets regular use by me to:
1) surf for things while laying in bed, watching TV.
2) RDP into my desktop or laptop or media center PCs which are anywhere from 4 to 40 meters away from me.
I was thinking about the Pro, but now that I've used the RT for this long, I just don't see what it will add. The form factor is too small to do any serious work, and despite the advertizing blitzes from any and all tablet manufacturers (including Apple and Google), tablets are a stupid form factor for doing long term creative work.
Edit: and I picked up the keyboard attachment for this very reason. Screen typing is for hipster dummies.