Just wanted to share my experience, because there may be some other folks in a similar boat. Instead of a leather/plastic case for my Touchpad, I was more interested in the moleskine/notebook style cases. A couple different places manufacture these style of cases, but I settled on the DodoCase (dodocase.com). As we know, the iPad 1 and Touchpad are very close in size, so I was interested to see how they would compare. Turns out, they're close, but with this type of hard case, not perfect. The speakers are covered, but all the ports are exposed, which is a good thing. The width is fine, however, the height is a bit of a problem. The Touchpad is about 3mm shorter than the iPad1, and the corners are more rounded; so if you slide one end flush with the case, the corners of the Touchpad don't reach into the corners of the case (which is where the grips/placeholders are located).
I'll probably try to add some additional rubber stopper type material to the corners to try and steady it up a bit. The big saving grace is the elastic strap that holds the cover down. If you wrap it around the right side of the Touchpad while it's in the case, it helps to keep it in place. You can then use it pretty effectively in portrait or landscape mode. So, long story short, buyer beware with this style of case.
I'll probably try to add some additional rubber stopper type material to the corners to try and steady it up a bit. The big saving grace is the elastic strap that holds the cover down. If you wrap it around the right side of the Touchpad while it's in the case, it helps to keep it in place. You can then use it pretty effectively in portrait or landscape mode. So, long story short, buyer beware with this style of case.