I'm interested also.
One thing that has kept me away from Olympus digitals is that they use a semi-proprietary 'XD' memory card, which costs more, is harder to find, is harder to find readers for, and doesn't work in anything else I have. AFAICT only Fuji and Olympus use them. (I don't know if they have gone to CF on newer models or not)
I have two older Olympus film cameras and love them (an XD (classic) and a Stylus zoom (rainproof, good enough for canoeing for me) but of course, they're film based which is so 20th century
If you carry it in a warm pocket then this won't be an issue, but some batteries get weak in cold weather. The most reliable setup would use lithium disposable batteries (say, AA size) which work well at sub-zero temps. Li-Ion aren't so good at low temps, so if the camera is rechargeable, make sure to 1. charge it the night before and 2. keep it in an inside pocket if it's freaking cold.
I personally like cameras that use off-the-shelf batteries rather than proprietary battery packs because I can find rechargeable AAs no problem and can always buy or carry a spare set instead of having a $30 spare camera battery.