Is the Dahon Matrix, folded, cumbersome on the train (subway)? I know the 20" foldies are great on the train, but are they adequate and comfortable and speedy enough to ride 12 miles through city streets (darting, dodging) and on multi-use trails (consistent speed)? I'm trying to make up my mind between a 20" or a 26" (Matrix).
Thanks for your help.