According to Tire Rack there actually is a "VW version" of the Ecopia EP422 Plus, they sell both.
The differences appear to be mostly max pressure (51psi for the VW version vs 44psi for the non-VW version), lower treadwear rating for the VW version (540 vs. 640) despite same starting tread depth of 10/32", and slight dimensional differences (VW version slightly wider).
Given that, I wouldn't mix the two versions side to side and if you had to buy a non-VW version you would probably want to buy two (or a complete set of something else).
Also, if you like running pressures up around 44psi you would be at max pressure for the non-VW version but well within spec for the VW version.
Based on the above, for an eGolf, I would stick with the VW version of the Ecopia EP422 Plus vs. the non-VW version, but there are many other good tire options out there.
2015 e-Golf SEL my wife's daily, shared on weekends
2000 BMW 540iT my daily and our range extender
1986 Audi 4000 quattro "the cockroach" my alternate daily
1983 Audi Ur Quattro "the garage queen" looks pretty and appreciates daily