feetpower,

Quick mount fenders like that are pretty easy to find. Models like Planet Bike Freddy's come to mind but there are others. Do a quick Google or swing by your lbs. You'll be sure to find what you want. The only issues I see at all is the ones in the picture would still allow spray to get up to your bar/hands. I personally prefer a front fender that extends a tad past the fork for this very reason. Also, the rear doesn't extend far enough towards the seat tube to keep the back of your pants from getting wet/crap on them. They would definitely be fine if you were riding in shorts or jeans and you didn't mind getting a little wet. At one point or another I posted up a pic of my Surly with heavily chopped fenders and through trial and error I've found those lengths to be just enough to keep me 100% dry. No splash on the back of my suit pants, no dirt and crap flying up threatening to ruin white shirts and my shoes don't look like I just walked out of a swamp. Although, I actually wear overshoes that extend up to the bottom of my calves on rainy days. But, on days it's just wet (rain has stopped) I just go with shoes. By the way, for shoes, regular, old plastic bags from 7-11 or wherever work great for one way. They get torn up quick but you'll arrive clean and dry.