The radiator is fine. Yeah, you do get a bit more mud spray, but it mostly collects on the oil filter and skid plate. Especially if you add an aftermarket radiator guard like the one from Touratech or Altrider, you'll be fine.
2009 BMW F800GS, Olive Drab
2006 Ducati Sport 1000, Black
Custom built Ducati GT1000 Scrambler, Red