I've been considering a Fold since they were announced but didn't feel confident enough to invest it what seemed like bleeding edge tech.
With the 3rd generation I felt more confident and went for it. I'm never going back to a standard phone!!
For productivity it is phenomenal. I no longer have to carry a tablet with me or wait to get back to a PC to read a PDF that's just been emailed over. I can do clearly read and annotate presentations and all the Microsoft office apps work well.