Have had my Spectre for 2 months now and I really love it.
I've used it in public many times - people look at it from a few feet away and say, "wow, is that one of the newer Mac Books?"
Mouse can be a bit goofy sometimes - I have a small Bluetooth mouse that I use when I have the room for it. Keyboard responds very well.
Took me a while to get used to it as a tablet and iPad replacement. But I finally found a folio envelope case that makes it much easier to recline in my favorite chair and read with it.
So if anyone is looking to get a new ultra thin laptop that doubles as a tablet, get the HP Spectre x360. At the time I bought it, I wondered if I'd like it better than a Lenovo or the newest Dell or a Surface Pro 3. All of those are nice, but from what I've seen since then, I'm very glad I bought what I bought.
Have used it for a few community presentations and it has worked perfectly. And much lighter than my prior brick of a laptop.