I would have said that roughly 95% of pasta recipes don't add salt to the dough, but add it to the water; mine would be among the 5% that add it to the dough and not the water. Yours is the first I've seen that does both; this means, of course, that I have to give this a try.
If I plan ahead enough, I could even make a third of the batch with the full salt in the dough and none in the water, a third with half the salt and salt in the water, and a third with no salt in the dough and heavy salt in the water.