Hello - thought I'd make a quick post/photos of the mudguard (you crazy americans call them fenders, right? :-) that works a treat on my swift folder...I wanted a mudguard that would quickly remove, but also allowed me to fold the swift with minimum hassle.

I bought an SKS X-tra dry that has a really simple strap that functions as a quick release...Most mudguards I looked at seemed to either be fixed, not accommodate the folding mechanism or were completely unsuitable for 20" wheels...

When I fold my bike, I just twist it around and lift - it's perfect! There's a few photos on flickr if you're interested:

Not sure about the best front fender that could also rapidly be removed (although speed less of an issue)...anyone using any decent front fenders on their swift?
http://www.flickr.com/photos/guy/sets/1012115/