I started with the type cover and switched to the touch cover. I'm a professional and need to use the Surface for notes and email while I'm in meetings. This is the whole reason that I got it. I agree that you can type much faster and more accurately on the type cover, but also have to stress that the clickty clack of the keys is loud enough to be easily heard by others and is distracting. I only tried using the type cover at one meeting and it was clearly distracting the other people there. The touch cover is 100% silent so long as your tablet is muted. Stealth typing at it's best! I may never be perfect typing on it but it really isn't that bad at all - I'm actually really fast on it and I can certainly pound out several paragraphs or even several pages without much trouble.
So this seems like a usage scenario question - will you use it around other people? If so, go for the touch cover to avoid distracting them. If not, go for the type cover for speed and accuracy.
PS - both look great, but the touch cover is really sleek and sexy. It also feels more comfortable when folded back (IE, when you are using it as a tablet).