I've got one. At an upgrade price of £99, it was just too tempting not to.
You can find a review here:
http://www.mobigeeks.net/e/pages.php?pa ... iew+Part+I
It's not your average style of review, but I think it sums up the thing pretty well. Basically, it's a cut-down Pocket PC - there are some good points (clever dialing system, IE, emails, SD expansion) and some bad points (interface occasionally a little slow to respond, a little bulky as far as mobiles go).
As with the PPC OS, there's no way to manually close applications, something that makes me a little nervous. Having said that, in the two days that I've had the phone, it hasn't locked up, and the OS seems to be running quite smoothly, so maybe the automatic memory handling is actually working as it should do.
The neatest point about it is the dialing system, which is a very clever innovation, similar to T9. When you press a key such as "2", not only does the number appear on the screen (i.e. you start dialling normally), beneath it appears any contacts that start with a, b or c. Say I was then to press "6", it would then display any contacts whose second letter is m, n or o. For example, Andy and Bob would appear, and to dial either of them, you simply scroll down to select them.
The only real negative points for me so far are...
1. The Smartphone version of PIE doesn't support frames at all - you simply get a message saying that it can't display the page.
2. Occasional slow response times.
3. No MS Reader. Shame, because the screen is big enough to make it viable.
If you have any questions, feel free to fire away!