From using the leaked version for a few hours the last 2 days:
- its surprisingy fluid
- apps load fast (even from an USB 2 flash drive) and once you load them, they stay in RAM even when you close the app, so the next time it starts "immediatly"
I think if they managed to make a deal with Google and make it posible to run the full (linux) version of Chrome alongside the rest, this could really become something interesting.
Mobile chrome works fine for the most part but the lack of extensions is not ideal. There are problems with video playback from the browser. Also the bundled video player seems to not have a broad codec support. There are apps that wont start or some that will rotate your screen
Some interactions are abit untypical for a desktop OS, like you need to press and hold to select a word, you can click and scroll
But that might be intentional to some extend as they might be making a PC for the generation that grew with smartphones.
Currently I think its especially a great solution for kids, so they can have their PC on a USB stick and not mess up your data, it has an infinite supply of "silly" games and social stuff from the playstore. But IMO the potential is there for it to be a serious competitor to Chromebooks and even low end Windows PC for home use. The excitement about this OS exists, now if devs will also put some more effort in developing scalable apps (MS office is a great example).
However keep in mind this is a leaked, non final version, so things should only get better.
Overall I thought it will be much worse, I was positively surprised and waiting for the official release tomorrow.