Bilingual thread I suppose.

On Osram's website they claim the following:
Question:
Can halogen lamps also be used in the open or outdoors?
Answer:
Yes, in conjunction with suitable luminaires for outdoor use. It is usually assumed that, like PAR lamps, halogen reflector lamps with a cover glass can also be used without restrictions outdoor. This is not possible with DECOSTAR and HALOPAR lamps. The reason for this is that the cover glass of these small lamps is not completely bonded, as a certain space for the avoidance of overpressure must be present in the reflector area. This then enables the entrance of water when the lamp is subjected to the weather outdoors.

Has any of you had any issues with these lamps in wet conditions? I was planning to use these in an orienteering headlamp and it certainly will get soaked - probably not more than in MTBing though. The little I understood from Tobbi's german website he didn't use any shield on his headlights?