Personally, the frameless windows are one thing I don't like about my OBW. With both my OBWs I've had to had the glass readjusted several times to keep the seal between the glass and the weatherstripping tight (wind noise). Having a frame on the door would eliminate the issue.
I saw the Tribeca at the Philly Auto Show last week. I'm ambivalent about it. I think the grill is kind of ugly (reminscient of the 1970s Subarus), but the inside was nice. I don't really see it fitting into the Subaru product line all that well.
As an aside, the local Subaru dealers offered a nice owner-loyalty reward. We got two free tickets to the show (normally $12 each), a free dinner buffet with sandwiches, soda, etc., and a free Subaru keychain. A nice touch. Subaru does a good job of providing nice little perks like this to members (at least in the Philly area, which is where Subaru USA HQ is based).