I was thinking of using it for a couple reasons. There is better fuel metering through annular boosters in general, but maybe not with these. It is one less throttle shaft, therefore less vacuum leakage. I could have 650 CFMs with no secondary transition. Only having "primaries" and no "secondaries" to tune would be a lot easier, especially tuning by "the seat of your pants feel". There is less chance of fuel leaks with two barrels.
If they run half way decent I thought it would be worth a try running it. Other wise I'll stick with my current carb.
Oh yeah, and I have about ten different Holley four barrels in my garage, and I am trying to thin them out and only keep the ones I need.