I also noticed something — if you sculpt your mesh and the pose is off, when you do a conform on your handmade mesh, the wrapped geometry will twist slightly. This results in very bad skinning for the model.
What I do is sculpt whatever creature I want, then I quickly rig it in Blender to match the correct Metahuman pose.i will then fonform that mesh. That gives me a pretty solid mesh without major deformation. in the joints refguardless body type. yu can do pretty much any form you like.
im in dwarf of orc land atm

hey edward i was that video was that your upload m8?