Your math is off. 32 silver Alpine spokes from Rose are $18 plus some shipping or $36 plus shipping for 72 spokes. While it is technically more expensive, it's not nearly as expensive as you make it out to be.

Nor are the spokes that much "heavier". As the Wheel Fanatyk article pointed out, there is a 7 gram difference per wheel between double butted and triple butted spokes but a 30 to 50% increase in wheel strength. I'm not sure what danmyersmn's application is but a triple butted spoke won't hurt performance and will certainly increase durability.

You seem to be opposed to using DT Alpines (or other triple butted spokes) just "because". I suggest them because they add a benefit over double butted spokes for heavy riders. Lighter riders can benefit from them as well. An argument could be made that they would be more forgiving for a new wheel builder as well. The greater strength could make up for any mistakes made in wheel tension.