Elektor Formant Modular

My next question, in preparation for the big Formant overhaul is... Do 
I have to use the power supply that is designed for it?
It works fine and everything, seems pretty quiet. But I will be adding 
a few modules from other manufactures (predominantly Blacet and Wiard 
(cool stuff with the same size sockets as formant..)

SO>>>

If I buy the Blacet PSU (which I'll need top power these modules) can I 
also power my FOrmant modules?