Snagged one of each today here at the local WM (guess they stocked mine the same time they stocked Slim's area) -- Very cool all the way around.
I may have to make my Warthog custom a "Joe-only" project, because even though my custom Master Chief is considerably smaller than the Halo 3 figs, he's still too big for the Warthog unless I do some major mods and chop out part of the interior. But then again, at $10 a pop, I may do just that

For those of you using Accelerator Suit-based Halo customs, this thing is perfectly sized.
The little Hovercraft is awesome as-is - I'm not even going to paint it, just peel the Corps! stickers off. I think I'll call it the "Dolphin" (smaller version of the WHALE).
Oh - and for those of you who find these - keep in mind that the little black piece that holds the missiles together is removable, and is apparently just for display to keep the missiles from falling out. When removed, you can fold down the missile launcher and hide it from view. Cool little feature.
Now if only Lanard could make figures half as good as they make their vehicles....