I have one of these installed it on a new worktop shelf recently, works well, and unobtrusive. Also have a pop up socket on an island, as you say the annoying thing is losing the space in the cupboard, and also the fact it is unprotected in the cupboard unless you build a shield.
I was planning on pop-up sockets for my worktop but realised that they took up a load of cupboard space.
We managed to get them on the wall in the end but the other option we were looking at was something in this shape to sit at the back of the worktop