Yeah,those look even less effective than Raceblades. The front will be ok as long as you don't bomb any hills at speed,but I can def see fling coming off the rear onto the rear of the bike and into the front derailleur.
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C'dale BBU('05 and '09)/Super Six/Hooligan8and 3,Kona Dew Deluxe,Novara Buzz/Safari,Surly Big Dummy,Marin Pt Reyes,Giant Defy 1,Schwinn DBX SuperSport,Dahon Speed Pro TT,Brompton S6L/S2E-X