Well, here's my put so far:
1) Car mount is nice. It includes plastic inserts so you can use it with or without a case. I don't know how big a case it will let you use, but one of the "normal" size cases is fine. Otterbox Defender I doubt. Otterbox commuter, ?? I hope so. The design shortfall on this one is that it should have a connector for aux in also. It's a pain to have to plug in the aux plug all the time.
2) The design team for the desktop mount clearly have not mastered the same "removable insert technology" as the Car Mount Guys. N00bs. It's going back. There must be a trick to getting the desktop mode to display, too, because it's not doing so on mine. But it doesn't really matter because as much as I want to have a desk mount, I'm not going to uncase the phone all the time to use it.
3) The Verizon kickstand is o.k. if you make sure to pull up a bit on the middle of the thingie as you adjust it... There's just a detent that it you try to force it through, will probably break. But if you apply a little finesse it moves o.k. The case itself isn't very secure or protective- It's basically just a belt-clip untill real cases are available. There's little protection on the corners, none on top or bottom, and if it hit the ground the first hit would pop it off the phone, leaving it unprotected for the bounce. It's main purpose is to mate with the belt clip. But if all you need it for is the belt clip, get one of those snap belt clips, right? So the kick stand is kind of the saving grace of this thing. Thank God I have a corporate discount, or I'd feel kind of ripped off.
4) The feel of the phone with the extended battery is fine, IMO. No one will mistake it for a RAZR, but then, if you really cared, you'd be buying a RAZR already. To me, it just feels solid. The fit of the extended rear isn't *quite* as good, but it's passable.
4A) BY THE WAY, EXTENDED BATTERIES ARE HALF PRICE NOW. Don't know how long this will last, and they'd only sell me one at half price. But for $30, it's a no brainer.
5) I haven't used the Otterbox Defender case on this phone yet, but had one for the DInc2, and it was good on responsiveness and protection. I didn't feel like I lost any feel from the built-in screen protector. But, the case is freakin' huge. I'd prefer a Otterbox Commuter instead, or a Seido combo case if they'd get off their arses...
6) WTF, was Seidio seriously "waiting to see about the demand?" I hope not. This is one of the most anticipated devices of the year, with huge pent up demand from people who love Sense, and are still hanging in with their DInc's. They should have had these cases ready on day 1. As it is, I'll go with either Seidio or the Otterbox Commuter, whichever gets to market first.
7) I'm using the Verizon anti-glare screen protector, and I like it. Nice satin finish, and less friction than the nekkid screen, which I find "catching" an my finger. The satiny screen protector is just begging for a swype keyboard, it's so smooth. ;-)
As for the phone, man, this thing rocks! After my DX took a swim I tried a Dinc2 and a Bionic, and boy am I happy I didn't settle... This thing is creamy 4G dual core sweetness on a stick.