I agree with the comments about some bikes being too good for certain situations.

I do not usually use my best upgraded mezzo for "lock up" commutes. Not because it attracts more attention, but because it represents more effort to replace/resource/alter if I claim on insurance. I tend to use either the less upgraded Mezzo or the standard Dahon curve in these cituations. If I do not know if I can leave the bike anywhere safe I might use the Onza Mini,which only cot me £25. Sometimes its about being able to relax knowing that a prized bike if not at risk, as you do the activity that the bike facilitated!