Outstanding! I rode home every day this week. Its 10 miles door to door mainly along Elston Ave. I can do this in 55 minutes at an average speed of 13mph although I'm pretty sure the cyclocomputer doesn't include stop time like a GPS. In fact, riding only takes me 5 additional minutes longer than my metra train commute. Strange but true.
Surprisingly along Elston I only get stopped by 6 to 10 lights so I can speed along for miles at a stretch without stopping. The 3 gears are more than enough for this ride which is pretty flat. There aren't any "hills" for which I wish I had a climbing gear and the speedier sections top me out at 22mph which is about as fast as I care to go on the bike.
I too bought the El Bolso but I keep it at work in case the building management won't let me in. I'll just wait until a co-worker shows up and have him watch the bike while I run upstairs and get the bag. Sort of a pain but better than hauling it around day after day just in case.
I put the rack back on my bike and use it all the time. Its a bit small but its a small bike so that's understanding. I strap my helmet to it when I'm on the train and then strap the small cover bag to it when I'm riding. Much easier then having the underseat storage bag because I'v gone through 3 of them because the zippers fall apart.
The rack can't hold my briefcase though. Its too wide so my heal keeps hitting the bag when I pedal. However, its pretty good for strapping odds and ends too especially hard or heavy stuff. Yesterday the wife called me and said the cat pi$$ed on the carpet and asked me to buy some carpet spray. So I strapped that to the rack so I wouldn't have to carry it in the backpack.
Oh here are two items I think people might find helpful with folders:
1. The Swiss Army by Victorinox Architecture bag line. Speciffically, the Acropolis which is a professional looking briefcase that converts into a backpack. Its a bit pricey at $250 but its very well engineered to store 8.5x11 papers, laptop, and has room for your work clothes. Its also a lot smaller than most convering brief/packs in length so when you put it on the small of your back won't be covered. That's the part that really get sweaty at least for me.
2. KlickFix Bags by Detours. These are great bags that you can fit on your Dahon mount. I bought a handle bar bag and I use it to haul my work shoes and rain gear in when needed. For some reason I don't see the actual bag I ordered but maybe its just out of stock so give them a call.