Where can you get spare parts? I've never been able to find any when I've looked for bits that might be compatible with other bikes. Those rims appear to be 28H & therefore Brompton compatible.
Surely the Mezzo fold means it has to be lifted and carried a lot. I can roll a Dahon or Brompton comfortably, it's a big deal as no matter how light one's bike it feels heavy in no time when carried for more than a few paces.