So we get both! (or neither) Cool!
Let's stall consensus and blame Core afterwards. Good idea! 
The HK agreement between miners and blockstream (basically Core) represents consensus. It clearly says both 2 MB hardfork and Segwit to be delivered. Doing one but not the other one is actually stalling - not to mention breaking intentionally agreement is quick way to loose all credibility - not best day for Bitcoin if it really happens considering blockstream basically represents Core, the most used Bitcoin full node implementation today.
The Hong Kong agreement explicitly states that the hard fork code would be ready within 3 months of Segwit's release, something that has not happened yet. The miners agreed that they would run Segwit in production in the meantime. IT DOES NOT SAY THAT BOTH A HARD FORK AND SEGWIT WOULD BE DELIVERED AT THE SAME TIME.