The HTC phone-shell-thing didn't really work, but that was more because it gave a bad experience as a laptop - both at the hardware level (phone-in-shell not being as stable or nice-feeling as a normal laptop) and the software level (non-x86 laptops kind of suck in terms of software availability).
Samsung's Dex dock thingy still exists and can be useful when travelling - most hotel rooms you can plug into the TV with HDMI, so a phone and keyboard is less trouble than carrying a full laptop. If you could rely on finding a keyboard (even just a USB one) in any hotel room it would be a lot better. And hopefully with apple shifting to ARM there'll be a lot more desktop software that runs properly on phone processors.
Samsung's Dex dock thingy still exists and can be useful when travelling - most hotel rooms you can plug into the TV with HDMI, so a phone and keyboard is less trouble than carrying a full laptop. If you could rely on finding a keyboard (even just a USB one) in any hotel room it would be a lot better. And hopefully with apple shifting to ARM there'll be a lot more desktop software that runs properly on phone processors.