Matches fashion is actually the same you can select a box or "eco packaging" which is a plain box with tissue but theirs seems to always be defaulted to their box and you have to actually select the plain box if you want it where as net a porters seems random. (I prefer matches boxes!)
Unfortunately I made bad experience with Matches either.
I received my MG from Matches in a plain box though I am pretty sure "signature packaging" was marked at checkout.
I checked twice before placing my order because I had seen the beautiful boxes before and wanted one on my own.
It was very disappointing and I contacted the customer service but I got an standard answer which wasn't even a reply to my concern. So I decided to give it up and just enjoy my new bucket.
Too bad that the kind of packaging is no part of the order confirmation. So you are not able to double check after the order is placed.