Quake, I think by "clampset", the Kona tech means something of a P-clamp solution on the seat-stays. As for "extension off the dropout bolts", I think he's thinking of a bracket like the one used for the Axiom Streamliner Road DLX rack.

No matter which way you go, I'm sure you can use the same eyelets for both rack and fenders. My Specialized only has one set of eyelets in the back and they hold my SKS fenders and cheap Wal-Mart rack wonderfully.

However you go about it, The Topeak SuperTourist racks are pretty nice and real fenders are the only way to go in my opinion. Let those DIY skills lose and make it happen.