Started playing around with mine this afternoon. First impressions are that it’s not as big as everyone said it was - it’s just a bit wider than Switch and has grip handles. I did notice the weight of it over time though whereas I don’t notice the weight of my Switch unless I’m playing it for aaaaages. The screen seems fine indoors with good outdoor lighting - I’ve had no issues with it. Neither have I had any noise issues from the fan, so far.
I was surprised at how quickly the 256Gb model filled up though and it turns out that all of the updates are also immediately downloaded too.
My only real gripes so far are that, as I’ve small hands, reaching the analogue sticks comfortably isn’t something that is coming naturally to me. Other than that the general UI feels like there’s a lot to absorb, and you can’t go from the top of a menu list immediately to the bottom by pressing up!