This scope is meant to use with one eye like a regular optic correct? Meaning having two eyes open like on a 1X red dot is NOT possible? — 2 Answers

Okay, THAT is an interesting question. With both eyes open, you will not see the same image - one eye will see an unmagnified image,while the eye looking through the optic will se an image magnified three times.

Consider this - Google "Bindon Aiming Concept". The basis is, that if you're scanning the terrain with both eyes open, your brain will "use" the non-magnified image. If a threat is perceived, the brain will "switch" to the magnified view. Not everyone's noggin is wired for this, but look into the theory behind it. Here's a quote:
" During dynamic movement, the scene through the telescope blurs because the image moves more rapidly due to magnification. The one eye sees the bright dot against the blurred target scene, so the brain picks the scene from the unaided eye. The shooter swings the weapon towards the target while perceiving the dot indicating where the weapon is pointed. As soon as the weapon begins to become steady in the target area, the brain switches to the magnified view."

Mark H.