Ah right, it turns out I misunderstood the EveryMac page about the Mid-2014 [0], with the wording 'a "no button" glass "inertial" multi-touch trackpad'. Thought that was their wording for the non-moving trackpad! haha :) It's the 2015 that had the taptic engine trackpad first, I think.

[0] https://everymac.com/systems/apple/macbook_pro/specs/macbook...