How natural does it feel compared to a treadmill you find at a gym or a running track?

When you watch people use it it looks very awkward and unnatural looking. So how natural does it feel compared to a treadmill that you find at a gym or a running track when you walk & run?
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This might be fixable if the shoes had a minor slope (thicker sole along the inside arch of the foot) to compensate for this, but I'm not sure if it would interfere with being able to turn the foot properly.
I feel like this is really something that needs to be studied by a proper orthopedic specialist, and I'm hoping that Virtuix already has, or is getting, one on their payroll.