Originally Posted by
makeinu
Yeah, I imagine a briefcase would work well. But then of course when you fold up the bike you have to carry the bike and the briefcase (either with the briefcase attached to the bike or separately, not sure which is worse). I like using a backpack because I don't have to do anything with it when I fold my bike (it just stays on my back). Carrying a whole folder with one arm is trouble enough; So I prefer spread out my other luggage to other muscles.
Of course, a backpack can make your back sweaty. So it's a tradeoff, but for a few miles like most people use folders for I prefer the backpack.
+1 for the backpack. I have got a few of the at home, when i go for a short ride i put my stuff in my mid-size wedge and i can still fold the bike easily. If i need to carry more stuff i will take a bagpack, when you carry the folded bike it is already enough, i don't want to worry about keeping my stuff on the rack. Keep in mind the bike isn't light, in your case the Curve D3 although small has a decent weight. I usually use one hand to carry the bike but sometimes i use two if it's a long walk inside the subway station for example. If i had to carry a suitcase on top of that..... man i will be miserable.
vincentnyc- I say when you get the bike, take it for a spin, asses your needs and we will take it from there. Before i bought my Dahon i was pretty sure i will take it with me everyday, the reality is different, sometimes things are not simple as they seem. Folding bike is great, but still you need to carry 11kg-13kg with you, if you need to worry about the stuff you placed on the rack, it will be too much to handle and no fun at all. If you are not going to fold your bike often it might work for you though.