Memory Card Reader/USB storage?

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Hi there, I'm thinking about picking up a Diamond when they come out in Canada in the next couple weeks. Was originally looking at an iPhone but in Canada that means a 3 year contract and there is no way I'm signing up for that. The one big sticking point for me on the Diamond is the 4GB memory and lack of expandable storage.

Now, the Diamond does have a USB port on the bottom. Yes I know it's not a standard USB, but there are a million adapters out there.
If I plug a standard USB memory card reader or USB drive into it, will the Diamond/Windows Mobile know what to do with it? Are there drivers available or built in? And assuming that Windows Mobile recognizes the device will music and video apps be able to play directly off the card?

Now, assuming all this works, what sort of battery life would I be looking at?

No, I'm not expecting to haul my media collection with me and most of the time the 4GB would be mroe than enough for day to day needs, but I do occasional travel and longer trips. It would be nice to take a couple 8 or 16 GB cards loaded with music and movies when I do.

Any tips you can give would be appreciated.

no, but you can use the Diamond as a USB drive