The FT Bullseye is used exactly the same as regular sights.
I agree when it is properly aligned, with the FO dot in the tritium circle, you will be pointing the gun similarly to using regular sights, but the focal planes are different and the sight presentation to the shooter's eye(s) being circles rather than squares (perhaps with dots) is definitely different.
With a "regular" front and rear sight, one can raise the front sight above the rear notch for longer distance shooting to compensate for bullet drop. The FT cannot do this.
The FT cannot be used like front and rear tritium night sights, because there are not two reference points for aiming when the FO portion of the sight is not working.
As well, the FT has no capability for elevation adjustment, which can be done with traditional sights by changing the height of either the front or rear sight.
The video on the company website explains how the FT is not like using regular sights.
One video reviewer remarked that after shooting a number of rounds with his FT, when he transitioned to another pistol with a regular front and rear sight, he had to work hard to acquire his front sight. That testimony alone makes me uncomfortable. If the new sight needs to be put on all my handguns for consistency, I don't think it's supposed advantages are worth it.
The FT most assuredly is not used exactly the same as regular sights.
The comparison to a red dot is misplaced. They aren't trying to market this as a smaller red dot, but rather a different type of open sight.
MarkS1 in his first and only post in this thread admitted he works for Mako marketing and has used the sight. He is the one who said, "Basically it is a mini-red dot." I responded to that statement with contrasting arguments, but such a statement also supports the statement that it is not used like regular sights.
On the company website, lower right hand area, a user testifies that this is "an ultra-bright mini red dot". This statement is apparently approved by the company for marketing purposes.
Mark says he has used it to about 9 yards and that it is a "defensive" sight, apparently meaning it is for close range work. A video is coming showing a former Seal hitting an unknown size target at 75 feet, or 25 yards. If the Point of Impact is just above the sight rather than at the sight's "bullseye" view--essentially a six o'clock hold--this might work. But if the "bullseye" of the sight needs to be held dead center on the desired Point of Impact, as the video on the company website infers, accuracy at 25 yards and beyond would be difficult because of obscuring the target. Precise sight alignment using the rear sight focal plane and the target focal plane, with the target hidden by the sight, gives this sighting system less utility than regular sights, or a RDS, IMO.
I don't mind being corrected when I'm wrong, which I was with some of my assumptions and statements in my first post before Mark posted and some others have pointed out certain features. However, I believe that my post to which you have referred is accurate in light of what Mark from Mako marketing and the company website have said.
I do not see good value in the FT sight for me, and I think regular sights are fine. I like the RDS concept the best, and it works with properly cowitnessed irons rather than against them.