I just traded comments with Redtick12 about those scopes in the "Best glass fixed 10x scope" thread. The highlights:
I have a 10x40 and it is quite different from a standard scope. It will focus down to ~6 yards and the image details are sharp and crisp, so "good glass". The field of view is uniquely impressive, maybe three times the diameter of a regular scope in each direction, like a 3x field of view at 10x magnification, or with the reticle mapping 25 mils in holdover/drop, I'd estimate an 80 mil diameter field of view. However, it is a challenge to get the eye exactly in the proper spot to view the whole reticle / field of view clearly, and with an eye-relief a half-inch or so from the lens it won't work on a recoiling gun. At 40/10= 4mm exit pupil, it isn't bright and so might be a poor choice for dark woods or dawn/dusk. And the focus knob turns less out at the farther distances, where a little knob turn gives a big change in focal distance, making it difficult to range distance using the focus knob. But, it is a unique scope experience, like looking through one eye of a 10x40 binocular. I think it would be great for field varmint hunting: glassing wide expanses on a bright day.
Redtick12 wrote,
"The brand that looks like it [Immersive] is MTC. There’s are called SWAT. I have an IO and an MTC. I really like, a lot, both of them, it the MTC a little more. I love the low eye relief, it gives you huge field of vision eliminating the need for variable power to “find” your target. I don’t find locating where to put my eye. There is a spot on my brow that I put right on the reticle and it is perfect. That is one of the things I really like about the scopes, there is no moving my head back and forth to get the correct eye relief."
and I replied,
"Thanks for the tips. If I ever get another prism scope I'll consider MTC. I see their high power is 12x50, which should pass a little more light than the 14x50 or 10x40 Immersives. When I first received my Immersive I almost sent it back, it went back in the box and everything. The image was dark and I couldn't get my eye in the right position to see or focus the whole reticle. But it was evening and everything was dark, and in the morning I looked through it again out into the bright day and was blown away, it was a completely different experience. Yeah, that field of view eliminates the need for low power. Now I grab that scope more than any other, but then again all my other scopes are cheapoes."
Hope this illuminates.
Best,
Mike