Well I think in the latter TOS movies during the Nimbus mission I think they did wear some more hiking style boots. Perhaps the shipbased ones are more "dress" uniform than anything else. Like in an office, does everyone, outside of a shipping/receiving wear steel toes? But I could see engineers wearing steel toes, and they weren't.
But yeah, no tread.. yeesh... even on carpet they had to be slipping a bit.
But yeah, no tread.. yeesh... even on carpet they had to be slipping a bit.