Yes its still working for me - with vodafone.
The only thing its not promised to do as a proper BB device is not been able to receive the emails straight away at occassionally.
Also, if you have the USB plugged in the BB email gets disabled automatically untill u unplug it.
I upgraded to the T-Mobile ROM 1.3.
Didnt do the big storage patch as i got lost in the middle of the tutorial and couldnt be bothered... ;p (BUT still have about 20mb original storage)
Also the post about BB checking mismatches probably only applys when ppl install the O2mini 1.3 ROM --> O2miniPro..
Otherwise i cant think of anything that i did more to make it work continueous.
Voda BB unlimited plan is $49 month i think.