I was able to cancel and re-order the iGadgitz case, and it arrived today. It's much sleeker and better looking than the product shots suggest. This customer image is a better representation:
You can feel the weight gain vs. the naked device, but overall it makes the KPW much easier to handle, whether held or left freestanding.
The bottom clips that you have to pop free to use the stand seem kind of unnecessary. Right now, the upper clips alone grip the device quite firmly, but maybe they'll loosen up over time and I'll be glad to have the bottom ones. The clips are the best solution I've seen for holding the device in a case--less tenacious than a plastic hardshell and less unsightly than elastic bands.
I don't see myself using the strap much. It's recessed into the cover, so your hand doesn't just slip in there--you have to pick and dig at the strap first. Once you're in there, though, one-handed reading is more comfortable and page turns less awkward.