What you're looking for is the Transleeve. You can probably find it on Amazon, but I think it's overpriced. They have a dual version coming soon for the keyboard dock too
I got the i-Blason case and while it does not work with the dock, it is a very nice case. Fits great and the cutouts for the cameras, sensors and speakers are spot on. As a bonus it comes with a stylus.
Is it this one? Looks like it protects the dock too but I think the tablet can't lock onto dock when tablet has case on. Sounds like what you meant, unless you got the i-blason that only is meant for the tablet (there are two on the site for the 700).
i-Blason ASUS Transformer Pad TF700 Infinity Tablet Artificial Leather Keyboard Portfolio Stand Case Cover for TF700 with Free Bonus Stylus (Speaker Hole is Opened) Black : Transformer
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Do those skins interfere with docking at all? How resistive are they? Not that I plan to drop it but i know the case is pretty protective, although more bulky for sure. I always see them and love the concept but don't want to permanently cover it. I like the metal look and even like the gurple color. I have a leather profolio now but keep looking at these things. Man, decisions! heheh