Font vendors seem to _love_ coming up with weird snowflake licensing schemes rather than trying to stick with something well understood.
There are no page view limits for websites (no trackers), installation limits , epub/ebook limits, etc. Basically it is along the lines of FontSpring's worry free license and I think its even better.
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.