The compass, thermometer should work out great.
actually I find the thermometer utterly useless. While its on your wrist it gives mostly your body temp. You have to take it off your wrist and let it stabilize for accurate readings. The book says 20 minutes, but it doesnt take quite that long.
That defeats the purpose of having it on your wrist, im not going to risk loosing or leaving it behind.
I find the barometer my most used feature. It works well around this area because I spend 90% of my time in reasonably flat terrain.
I find that my metalic bands once adjusted sits on my wrist ok even if it grabs the odd hair. They seem to stop grabbing after a while. It does go from slightly loose to snug fit through out the day.
I made a small black mark in the pattern of the rubber band of my SPF40. After experimenting I found that this hole was the most comfortable to start the day, but I spend the rest of the day moving between that hole and the next loosest hole to stay comfortable. The metal links easily form around my wrist, but the rubber isnt quite as forgiving. My wrist seems to sweat and add to the discomfort with the rubber as well.
I also seem to swap wrists a lot too on hot days with the rubber strap.
They may have improved the bands since I bought mine, and you might find it suits your wrist better.