Now that I think about it, I had used these as a bit of an experiment. Right before I dry-hopped that IPA, I siphoned out a six-pack and bottled it with the carbonation tablets. After dry hopping, I bottled the rest with corn sugar according to the tastybrew calculator.
After a couple weeks, I tried both versions side-by-side in identical Duvel tulips. The beer with the carbonation tablets had better carbonation than the traditionally-carbonated one. The one with the tablets had this perfect little cloud of bubbles over the tulip's little bubble-making nucleation site while the other was not so much.