I just don't know what scenario this would ever happen in.
If Varsho is able to get to 2nd, it would be a good enough hit that Kirk would go 1st to 3rd unless he totally misreads the ball. If Varsho is scoring from 1st, Kirk definitely has enough time to score from 2nd.
The only scenarios where his speed would be suppressed is on potential 1st to 3rd scenarios with Kirk on 2nd and they hold Kirk at 3rd. Or tagging up on flyballs and advancing a base.
I don't think it will come up very often. More important IMO to have guys like Kirk/Belt on base for a Varsho homerun like Laika mentioned