This does work i have just used it TMAPI didn't work for me (yes I have a debug eboot in place) but CCAPI DOES WORK.
Make sure you load up Spec Ops and off you go.
It takes a few minutes to kick in but it DOES WORK.
Wish it was for all clients though I really don't want to take my main account online on CFW just to get the trophies again.
Just make sure you can see the writing in the top left corner and it will work
Thanks SC58 much appreciated.