it should work fine. this is the plan I have for my crawler. wire both motors positive side to the red esc wire, negative side to the black esc wire and seal off the white wire. Set the esc to brushed mode and it should work fine.
Okay cool. I am planning on buying a Gmade G1 and was wondering how a MM would work with a two motor setup. How many cells or what voltage do you plan to run? I have seen some people use a 6 cell pack but that seems like it would not be enough.