O2 XDA Exec

Thinking of getting this phone to replace my current Vodafone handset and my Palm Pilot (an old m515) and also act as my MP3 player. Kill three birds with one stone (or "one brick" according to some reviews).

Some more info:
XDA Exec page on GSMArena.com
XDA Exec from O2 Ireland catalog

I posted some questions about it on Boards.ie, but since it is literally just out in Ireland I'm not sure I'll get much response:
http://www.boards.ie/vbulletin/showthread.php?t=2054961990

I'm wondering...
...will it play any MP3s (rips from my CDs) or just ones I buy off O2?
...will it really connect to any Wi-Fi network including my home one?
...will I be able to download and install software from any source?
...will I be able to run Skype? (while connected to my own Wi-Fi of course)
...will it really replace the Palm Pilot?

Just from reading the specs it looks like the answer to all of the above is YES. But will it do all that well enough? If so it is worth the money, but otherwise it is way too expensive. I might be better off upgrading my Palm to a new model and buying a much smaller and simpler phone.