Vitaly bulgarov modelling

 From:  ss (CHUCKY)
8648.1 
Hes producing some killer mech stuff using Moi 3d i believe. Just wondering if anyone has any idea what his approach is in Moi? He has a lot of angles in complex pieces and im struggling to understand how he does it in Moi. Would it be booleans from a solid or mainly curves using network, loft etc. Any tips and tricks would be great