That just seems like a lot of bulk and weight for zero power. You can get a great red dot that weighs less than half as much and is much less obtrusive or a low powered scope that is less bulky and weighs the same or less. I own two 2.5x Leupold compacts that weigh only 6.5 oz. @.
What advantages does the large tube Red Dot have over something like the Holosun or Burris Fastfire?