I have two Strida Mk1s, and theyare a fun ride, but restricted to rider.
The design is clever and folds quickly, however for taller riders the height of the seat foreshortens the seat to bar distance to become very tight.
Also with a single gear it is restricted and "honking" tends to cause the belt to slip.
Finally if you get the fold wrong and drop the plastic chainwheel on to the ground it will shatter.(This may be better in later models)
If you want a fun and novel bike for short rides on flat ground then it is ideal, but anything more than that, or for a tall rider I would have second thoughts.