Grunting Will Be In Lego Star Wars The Skywalker Saga But It Doesn't Make Any Sense!?

Having an option for grunts was amazing news but right away it made no sense to me and I've seen no one else bring it up.
If the voices are the default option then that means the cutscenes are going to be recorded with moving mouths as if
they were talking. So how are grunts going to work? Are they just going to mute the voices and have grunts over talking mouths?
If they were to properly have both the option for both voices and grunts then they'd have to make two complete different sets
of cutscenes. If you're going to have grunting you'll NEED shrugging and if you'r going to have voices it'd be awkward to have
shrugging. You guys no what im sayin? I sadly just can not see them giving us 2 seperate sets of cutscenes.

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Geforce GTX 1060 6GB
AMD FX 6300
Asus 970 Pro Gaming/Aura
16 GB Ram
2560 x 1080 Monitor

Sense!?