Artful, you're on a roll man!
Just to add, if you're concerned about your blur's lock rigidity, the Kershaw factory makes sure that each knife passes the lock test. I believe that the locks tend to shift around while they're sitting in boxes / shipping out or whatever as the parts are fitting into place due to screw tension, and that's what causes the occasional lock failure.
It really doesn't happen that often at all, and if it does, Kershaw will be more than happy to fix the issue for you.
The Blur has quite an "open" shape that supports a wide range of handholds. This makes the knife very "ergonomic" as the hand adapts to the open design quite readily. (It doesn't have a confined choil or thumb ramp)
I in PA and we've had -5 F degree weather recently. Of course, since it's metallic, it will seem cold to the touch; nothing unbearable though. I've never had an issue of the blurs being warm in 108 F degree weather last summer, nor in humid climates while in Honduras.
To sum up, the blurs are all made the same, just with a different blade steel / shape. You could even theoretically swap out handle colors if you wished. All 3 of my blurs have solid lockup right at 35-40% and haven't budged since, no play up/down. A word on sharpening, as long as you use ceramic sticks / the spyderco sharpmaker / paper wheel system you'll be just fine. Kershaw will also sharpen your knife back up for you for free as part of their lifetime guarantee.
"Hard-use" has different meanings for different people. I've used all of mine hard while outdoors, as well as in cutting endurance tests. They've all held up just fine; it's one of Kershaw's bestsellers--they don't make "weak" knives.
Here's a photo from a previous thread to keep you enticed:
And a simple yet thorough review of the S30V Blur:
http://www.bladeforums.com/forums/showthread.php?t=793781