I tried it and found it heavy and didn't like how everything was an add on or the foam bars.
I'm going with the peg perego book pop up instead. Similar but less expensive, lighter and in my opinion nicer. I also like their car seat and won't need to buy an adapter for it. But it's not a double. I figure we'll cross that bridge when we get there.
The stats say the Uppabby vista is 27.5 lbs (frame + seat), the Peg pergo book pop up is 17.6+9 (frame + bassinet-there was no seat specs). Pretty much on par though. The peg pergo comes with bassinette, as does the Uppababy Vista so no buying of extras. Difference seems like the Peg pergo front wheels are smaller, it's not convertible for 2or 3 kids, it's $100 less, less colour choice, and has less storage. It didn't say if the tires are air filled or foam, so don't know how they'd hold up.
I just compared carrying the frames folded up. Peg perego was lighter that way. But that being said, it's about what you are looking for, light weight was important to me. And you're right you can't convert it. If you want one that converts to a double it doesn't work for you!
It's now nearly $300 cheaper with the vista price increase. And I didn't look into colour too much, husband just wanted black. We got it today and I love it!
By extras I meant things like adapter for car seat. We got the peg perego car seat too, which is also super light, so we didn't have to buy an adapter.
I set up the basinette in the bedroom today. I want the cats to get used to it ahead of time.
My friend got the vista and loves it. It's all about what you're looking for