I used to have a clam phone when I was a kid and I love the idea of a foldable phone now.
But I wouldn't buy one any time soon - the idea of a hinged phone and screen just sounds far to vulnerable to wear and tear. As soon as you start adding moving parts you increase the risk of failure.
It's a great concept but at the moment it's a superfluous luxury and as they're so expensive then the cost of a breakage is just too much to tolerate. As the technology and manufacturing improves and/or becomes cheaper I might get one. But at present I don't want to risk buying a very expensive phone that could break in such a basic way as a hinged phone and folding screen could.