I got Switch and Zelda on Friday and have been playing tons.
I think the system is neat. I'm not sure how much I need handheld mode, but it's cool to have. As a piece of hardware it feels elegant and well designed, much moreso than Nintendo's other hardware.
Beyond that -- I love Zelda, Zelda is awesome, but my overall impression of Switch is a bit meh. The pro controller is comfortable (I wouldn't put it above DS4 or XB1 -- it's similarly comfortable but probably a bit lower tier because of no analog shoulder buttons and no headphone jack) but playing Zelda with the joycons is, to me, very uncomfortable. The buttons are small, start/select are hard to push, everything just feels cramped and wrong. Zelda is also difficult to play in handheld mode because unlike traditional handheld games it wasn't designed specifically for a small screen -- So it's like looking at a tiny shrunken version of the game. It's not a great experience.
Beyond that, the Switch -- Software side -- Is almost comically underbaked. I added my friends to my friends list, but I can't send them messages or drawings or screenshots. I guess it's there to help hook us together if we were playing something other than Zelda -- But, still, it's just so minimal. No trophies/achievements, can't share screenshots/video clips with friends, no VC, etc. It even lacks basic video streaming and web surfing functionality. If it had netflix/amazon/hulu/twitch/youtube/etc -- I realize there are many places to access these things, but they're so standard it's always weird when they're not there. I use consoles for streaming video all the fucking time, so it stands to reason I or someone else would use Switch for it.
I don't regret getting it because I know I'd want one sooner or later in any case, but knowing what I know now I would have been perfectly content to get the Wii U version of Zelda and just wait for Switch to mature. There's just so little there right now and the one big worthwhile thing to do (Zelda) is perfectly fine on Wii U.