Review request...Treo 650

I have a friend who owns a business in which his wife works exclusively.

She spends a significant amount of time on site and is looking at a Treo 650 as a mobile solution. I am assisting my friend with the research.

She needs to be able to...

- send and receive email
- use it to connect to the internet for her laptop
- organize her schedule

Any reviews or tips on this smartphone, its reliability and its functionality will be greatly appreciated.