I'm pretty sure this is answered on the Windows help page #4, but would like something more explicit - my company takes licensing very seriously.
Is it permitted to buy one license (say, the Mac & Win combo) and then use it for both personal and business purposes? It'd be used only on the platforms specified, by the same user (me). Very likely separate vaults, but that shouldn't affect licensing.
The help page I linked could be read as "you can use your personal vaults at work to access your personal online banking".
With the existence of 1Password for Teams, and business volume licenses, I'd appreciate explicit permission to use my personal license for work things too.