Does this mean that if I am a one-man-freelancing-shop I need a commercial license rather than a developer license? As a follow up: If I work for SuperMegaCorp

Does this mean that if I am a one-man-freelancing-shop I need a commercial license rather than a developer license? As a follow up: If I work for SuperMegaCorp as a W-2 employee, I obviously qualify for a developer license, but as a 1099 contractor? And if I send a PDF invoice that uses this font - is that professional or commercial usage? Clearly, I am not a lawyer ;) Very nice font, BTW.