Augh nothing beats the sight of gore after waking up from sleeping in; maybe turn those image links into web links with a disclaimer?
Anyhow, on topic; bern helmets are a good choice for a urban non "look at me!" helmet; I really like the design, especially the ones with the baseball cap brim but the roadie inside of me won't let me come to grounds to buying one even if they were on sale at Marshalls in my size for $24.99. My wife has one (bern berkeley to be exact) and although she never complains about it being too hot (women are always cold lol); the design sure looks somewhat heat retaining to me. However, I presume you can withstand the warmth of it without significant annoyance on cold winter up to warmer spring days.