soapstone is much denser than water(thus ice) and is within the system vs cooling the air. And soap stone doesn't dilute my JW Blue...
Great catch. I didn't want to belabor the point earlier but figured somebody might bring this up.
As already mentioned, soapstone is 3 times as dense as ice, so by volume ice only has 7 times as much "cooling power." In practice I have seen people use slightly less soapstone than ice, so the typical ratio of cooling power probably nets out around 10 to 1 in favor of ice.
The other point is that 80% of the cooling power from ice comes from melting. So while the soapstones begin warming immediately, the ice method only does so at the tail end. This is a huge point.
So if you go with soapstones to avoid dilution, use at least 7 times as much as the corresponding volume of ice and don't be disappointed by immediate loss of "chill."