I doubt ANY phone will be stable by porting another OS in it... U will most likely find some bug...even with all the perfect drivers etc, there will still be bugs somewhere somehow........and no android user will be able to help because its simply "not an android device".....

Nokia will still release software updates... I got an sms a few weeks ago that there is a software update for the N95.. :S ... BUT it wont be that often that they release the updates....