I camped out 42/50 days in the field this summer in this tent and have nothing but great things to say about it! Using 4 stakes for the tent/footprint and 4 stakes for the rain fly/vestibule the tent had no problem holding up through 20-40+ mph gusts and plenty of rain, never letting any moisture inside the tent. I had to setup and breakdown the tent daily and got to the point where I could do it in under 10 minutes by myself.
As far as size goes, it's sold as two man tent however I used it for myself. I would say it would comfortably fit a couple. I'm not sure I'd want be in there with a friend. For two full size guys and gear I'd probably go with the 3P.
I haven't had the opportunity to backpack with it yet but at just under 5 lbs trail weight it might be a little heavy for one person with the rest of your gear. Split between two people I don't see it being a concern.
The footprint and gear loft is a really nice addition too. The foot print reduces the wear on the bottom of the tent as well as putting a little bit more layer between you and the earth. And while the gear loft looks small at first, I found it very useful and was putting things in it like my headlamp for an overhead light, cell phone, and airing out clothes.
The vestibule is just big enough for a couple pair of boots or maybe a smaller pack. I don't think it would comfortably cover multiple 50+ liter bags. But if you use the tent as a one person it's more than enough.
I couldn't be happier with this purchase and look forward to another 40+ days in it.