I'm running Photoshop, Lightroom and ArcGIS on an i7/256... If there are bigger pigs of applications than those three, I can't think of them. The Surface handles them fine, and doesn't heat up any more than any other smallish laptop asked to handle these huge apps - remember that this thing LOOKS like an iPad (and does a perfectly acceptable imitation of one - it's even a darn good e-reader), but packs a ton of power. The battery life is entirely reasonable for a tablet if you use it as a tablet - if I'm e-reading and doing light web browsing, it'll get 9+ hours. Running Photoshop CC and ArcGIS simultaneously is guaranteed to kill the battery, but try that on any other tablet (no laptop will last very long running those two, either - unless it's a semi-mobile workstation with a battery the size of a UPS).
It's not perfect, but it is by far the most innovative computer I've seen recently. The combination of pen, touch (finger), keyboard and mouse is actually brilliant. I can create documents that I couldn't on anything else (integrating pen input into other documents). Apple's too busy buying lousy headphone companies and making fashion watches to be interested in this interface space - shame - I'd have liked to see their take on it, but they seem to be dedicated to the iPad as a consumption tool, rather than a creative one.