Cold wx flight suits are hard to come by for sure, so at least you had that going for you...I couldn't even get one in Korea! I learned to fly in the beloved UH-1, and after three other helos, they are still my #1 favorite (but yes...cold for winter camping, hot for summer camping).On the flip side, the UH-1H gets cold as all hell. I camped in mine during an exercise in Hokkaido. It wasn't even super cold but I froze my Cajun ass off. Would have been worse if I didn't have a cold weather flight suit.
Hot day's aren't so bad since you can have a nice breeze through the cabin.