iPod Mini Armband is iPod Mini-only, I think.
I jogged with my 3G 15 GB iPod once.
To address your concerns, here I go:
- I jogged for about an hour that day. I had the iPod clipped to my waist for most of the jog. Then, since I felt uncomfortable, I clipped it to the pull-string on my shorts after tying it close to myself. Then it came loose enough for the iPod belt clip to be hanging on barely to my shorts. A few more steps and my iPod with its case snapped of and hit the concrete (headphone jack-first!). Crack! I pick up my iPod to only see a few scratches near the Hold button, I press play since my music paused and I hear some static. Then, I give it a restart and all is well. Now, this happened about four months ago, and I have not checked my iPod for any hard drive damages and it's running great.
- Just to show how rugged an iPod is, I've dropped my iPod on hard concrete and a friend's wooden deck more than five times now since I got my iPod. Not a single hardware problem to report. Rugged, ey?
- I would recommend either wearing a belt of some sort with your pants when jogging. I'd also recommend trying to find some sort of elastic band you could put on your arm. Better yet, buy an iPod mini case, and take the elastic arm band. If I'm not mistaken, the belt clip that comes with the iPod mini clips to the elastic arm band, so clipping on an iPod shouldn't be a problem. I'm not sure about that. BUT, I have seen some regular iPod cases with wristbands. Everythingipod.com has a lot of accessories.
- I often see people holding their iPods while jogging. As long as you're no butter fingers, carry your iPod in its case while jogging.
- If you still feel uncomfortable about an iPod for jogging, remember there's an assortment of flash-based players out there. The iPod mini for starters, and I've seen a ton of those tiny flash-based MP3 players (size of a lighter, I guess) going well under $200 with about a 512 MB or a gig at Best Buy just yesterday when I went to buy a Cruzer Micro. And of course, come MWSF, there may be some sort of small-capacity flash-based MP3 player by Apple.
- I think heat lowers the batter capacity momentarily until you bring it to a lower temperature (like room temp). I remember leaving my iPod in my car during the summer, came back, and the battery was dead. I went inside, left it in my room, took a shower, came back, and my iPod still had enough juice to play a few more tunes. And for other devices, I had similar things happen (like digital cameras, video cameras, etc.) where the battery would say its low, leave it alone, and it'll have enough of a charge, but those were with non Li-Ion batteries, mostly.