That's VASTLY higher improvement than even the wildest marketing claims of the manufacturers! If you look at manufacturers' claims, the boldest claims are talking around 40 seconds improvement in 40km on a flat course on a TT bike at 26+ mph -- about 0.29 mph. At lower speeds, the improvement CLAIMED by manufacturers is less or even nonexistent.

And also, the manufacturers only say aero trumps weight IF the wind direction, relative to the bike, is within a certain narrow range. Otherwise, you're just carrying more weight.

(I suspect they would like to hear your testimonial.)