Alright! I've got 1000 miles on them now, covering EVERY type of 'road' imaginable... the ultimate test, you might say. Here are my notes:
Below 5 mph they have a wiggle.
At 25 mph they vibrate.
At 75 mph they howl.
On pavement they are, well, not confidence inspiring when pushed hard. Through a smooth corner, steady on the throttle, they can be pushed to the very edge of the tread (I have 0 chicken strips left front or rear), BUT, there is no room for error... any adjustment in the throttle, or body movement, or road irregularity, will cause the tires to shift/squirm substantially. I never really had a scare or slide, but they were worrisome when pushed that hard. Keep in mind, I was pushing them hard... hard hard... attempted knee dragging, and playing cat and mouse with sport bikes hard.
On wet pavement they are even less confidence inspiring, but they still stick. The feel is just, poor, I guess.
On hard packed dirt and gravel I whaled on these things. I've got to give more credit to the bike than the tires (TC2 and ABS for the win), but together, man did we rock the West Virginia county roads. Tons of power-sliding, wheelying off up hills, and ABS sliding into corners.
Sloppy mud they did surprisingly well! TC2 helped here as well, but the tires did their thing. The only issues I had were on solid, hard packed wet mud/clay. That solid center rib might as well be a race slick when the tire can't sink in at all.
The tire does not have enough bite to wheelie off-pavement without the assistance of an uphill (just a fun-fact).
All that being said, I see myself using these tires for the foreseeable future. They're a great compromise in all aspects. The wiggles/vibrations/howl don't bug me one bit. The pavement uneasiness is only apparent when pushed hard, which I don't do often. Normal pavement riding they work fine, they're enjoyable off pavement, and they (should) last. Good enough for me!
Pictures for fun: