Perhaps we should not refer to "1mb block limit" but call it "limiting the monthly growth of the blockchain to 4.2gb"

Wording matters. There are, on average, 6 x 24 x 30 blocks on a month. At a 1mb limit that's 4.2 GB! So segwit will get us to an aprox. 8GB monthly growth. Already pretty high, isn't it? Edit: changed * for "x" via /r/Bitcoin http://bit.ly/2owu3jt