Hello - Sorry, this doesn't answer the question you asked, but it won't stop me from commenting anyway.
We got the eGolf-specific rubber mats for both of our cars - the dealer said they were different than other Mk7 mats because they are lighter weight in an attempt to squeeze out every last mile of range. Indeed, while they aren't as light as the stock carpet floor mats, they do seem rather lighter than the two sets of Audi rubber mats we got for our allroad and S4.
So I am by no means certain, but if the dealer's story is to be believed (and I leave the answer that question as an exercise for the reader
it is only due to weight reasons that the eGolf is assigned special mats. If that is the case, I would have a hunch that regular Mk7 floor mats (
like these) may indeed fit the eGolf, but I can't verify that from personal experience.
We haven't had our cars through a slushy Massachusetts winter yet - if I remember, I'll post how well they work once the bad weather inevitably strikes.