Already possible with the MH assets provided with the Quixel Bridge-to-UE4 exports (in UE4, in Content\MetaHumans\Common\Common you can find many preview meshes, which can be exported to your tool of choice, including Marvelous Designer). Those meshes have complete vertex weights assigned. It is easy to export the desired body mesh (e.g. into Blender), add the body’s armature to a cloth, transfer those weights from the body mesh to a cloth (in Blender, something like Object->Relations->Transfer mesh data->Vertex Groups and re-import into UE4 (in the case of Blender uncheck ‘Add leaf bones’ when exporting the FBX!). It is just a regular, manual workflow. In my observations, transferring weights that way work well.
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