You wrote:
“On the E20 you press the side switch for slightly longer than usual (long press) to activate the light. You do not press and hold until the light activates, doing so will put you in beacon mode.”
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The other E20R review states single click for turn on. And a long press from off puts it in lockout (press/hold for 3 seconds - blinks once)
(review about 30 days before yours) JETBeam NITEYE E20R - Review flashlight powered 1 * 16340
The company website also shows single click for turn on.
And neither the other review or the company website shows it having a Beacon mode, only Strobe.
http://www.jetbeamlight.com/products_show265.html
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Has something been changed?