I used to write a tech column in Business Day magazine ("Gadget Nation") and Entrepreneur Magazine ("Tech Talk"), and I reviewed WeRoam, actually got a test unit and put it through its paces but this was back in 2005. It works as advertised in the sense that you can get connected, check your mail etc. I wasn't that impressed with speed because SMART didn't deploy its EDGE widely enough at the time, it was limited only to certain "business corridors" - mainly Makat CBD, Ortigas Center, etc. - everwhere else you connected through GPRS which was at best dialup speeds.
However, the wireless broadband scene has changed a lot since then - SMART has more EDGE coverage nowadays, and 3G is now a reality with nationwide coverage. I heard they have a 3G card now for WeRoam.
The best thing I thought about the service was because it was a flat rate service (like DSL), you could stay connected remotely for hours without worrying about connect time charges.