Thank you all for the invaluable answers.
I think the most reasonable solution would be quitting looking for "importing" the patches but "creating" them with a pedal providing a user friendly controls/interface.
In this manner, i consider two options:
Roland v-bass: biggest advantage is letting me to have a direct midi output from the bass, and i believe there are no negative comments on the quality of the machine and the tone possibilities it provides.
Second option is Markbass super synth: the biggest advantage is the computer interface. and it is an analogue device (not pretty sure but sure it is more "analogue" than roland

)