HTC U11's Edge Sense squeeze feature: useful or gimmick?

Turns out the U11 can sense when the user squeezes its metal frame and launch a pre-set app when that happens. There are two gestures – a quick squeeze or a squeeze hold. As for what gets launched – that’s up to the user. Additionally, the camera’s shutter can be activated with a squeeze, instead of pecking for the virtual shutter key. The feature is called Edge Sense.
But is this an actually useful feature, or just a gimmick, which would be forgotten as soon as the user sets their phone up for the first time? Well… what do you think?

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