I received 2 DF0 Selector : one from AmigaStore.eu and one from Amedia Computer.
The DF0 Selector from Amigastore.eu doesn't fit in the A1000 (it'll be in contact with pins of the daughter-board)... I'll put it in my A500 or I'll sell it, don't know for the moment.
The one from Amedia doesn't look as "a well finish stuff" in comparison with the AmigaStore's one (the PCB is very nice, but this is the PCB that touches pins...). But this one from Amedia fits perfectly in the 1000 and it's working, so
Now, I just have to put the HxC in the 1010!