[Psyke]

it's always possible I suppose that the silicone skin would offer some sort of protection (deflecting wind, providing some thermal shielding). The basic device and tech are the same as the kobo though, so I'm not sure why it would perform better in colder weather... maybe something to do with the oil being used in the pearl screens compared to the previous gen that the kobo still uses? maybe the processor/memory chips run a bit hotter in the kindle, keeping the overall device warmer?

I've got a leather book cover on mine. I'm going to go bridgehead for a latte and I'll see how mine acts with it *Shrug*

- Update -

So, I spent a bit of time outside and I think my hands were more affected by the cold than the kobo (gloves are too bulky to hit the button with). This morning it's about -17c, and while they aren't reporting a chill factor, I'd beg to differ. On the way to the shop, I left the kobo in its case. I stood outside my office for 5 minutes before casually walking down the street. I was able to get through a chapter with no noticeable change to the screen or page change speed. I stayed in the coffee shop for 10 minutes to warm it up, then took the cover off and walked back to the office. On the way to the shop, I had the wind at my back, but on the way back to the office, it was hitting me, and the kobo, head on. I still took my time heading back and got through another chapter (reading the second book of the night angel trilogy, and chapters are on average about 12-15 pages with my prefered font size). Only by the time I got back to the office did I really notice that the previous pages text was slightly ghosting in the background. The main text was definitely faded, but neither issue caused any complications in reading the text. I'm sure if I had left the cover on, I would not have experienced any issues at all, but I'm sure it still would have degraded over time, however, I probably would have been out of the cold by the time that happened.