husband bought a bike friday last fall and watching him learn to use it was interesting. He actually broke it while either assembling, disassembling or closing the suitcase in the first few weeks. Once he got past that one, his packing and unpacking time sped up tremendously every time he tried it.
He's really enjoying the way the bike handles now too.
With those little tiny tires it's ironic that the bike is too tall for me to even try out!