In my opinion, the results have been dramatic. VFTs grow with much thicker petioles and more robust traps.
Traps seem to live for most of the season rather than constantly dying back.
The roots show no signs of decay or rot as is common in a peat media. Small seedlings grow vigorously without any sign of damp-off. Both Mike Ross and I have had these same results. These pellets are sold as an additive to raise the acidity and tannin levels in tropical aquariums. However, this stuff is fairly miraculous and is worth the money for a prized specimen.