Well there you have it, straight from the horses mouth as it were... . The one comment I have to make is that Carl is very experienced and has the coating down pat. It takes me about 1.8 ml for an 8x10 thus my cost is greater. OTOH I am inexperienced and hope to get more efficient with time. To start is better to put a little bit more than not enough and ruin the print.
I was reading last night about Kallitype and it does sound like a great process also. Since I have not done it I cannot comment but if Carl recommends it I am now very curious.