I shoot a rifle type sight i think it called an eradicator. it elimnates such problems as bow torque and the need for a peep. but it has its draw backs such as you only have 1 pin and the front blade is much wider than a standard pin thus you must be carfull to center your target in your sight picture. I dont think it would be necessarily more accurate than a standard pin and peep config. but it does fit a specific set of needs that are compatible with my shooting / hunting style.
I dont know if what your talking about is the same design or not but this one incorporates a blade in front of the riser and a dove tail behind they are about 4-6 in apart.
Hope this helps
Bob