A_T
I had a keyboard macro that would duplicate sequence markers as clip markers, can't find it now but it went something like:
Deselect all
Go to next marker (sequence as no clips selected)
Edit marker
Tab to Comment entry (where I keep marker text)
Copy
Escape out of marker dialogue
Select clip at play head (obeys track lights, which are tricky to script as there's no deselect all. In practice I'd just be doing this to V1)
Add marker
Edit marker
Tab to comment
Paste text
Enter to save marker
Repeat