I purchased a Greco "Defender" in Dec.98 and a Greco "MST" in Jan99. As a knifemaker and as a man, I find Mr. Greco to be one of the finest I have spoken to in years. He and his wife are as helpful and pleasant as you could ask for. The quality of the 2 knives was second to none. His work is very well finished and fitted together. As was mentioned the blades are THICK. 1/4 inch on the both of mine. This makes the blades less responsive to thin slicing and that sort of thing, but they are very sharp, and take and hold an edge very well. The Defenders hook shaped tip is very catchy, and will grab and slice whatever you swipe it at. Penetration of the slicing action is truly amazing. It is not a design for stabbing,but for ripping and slicing. At this it works well.
The MST is a more conventional designed blade, and can take anything I have put it to in the year or so I have had it. All of the steel he used at the time of my purchase was carbon steel. One of mine is A-2 and the other is 5160, if I remember correctly. The blasted and non-toxic lacquer finish that he applys really seems to adhear quite well, as mine show no noticeable wear in their year of use. The sheaths are very well put together leather. (I would love to see them offer kydex). But the leather is good and lacks nothing in it's form or function.
Sorry to run on so, but I am very impressed with the Greco work, and intend to buy an MST2 that I see on the market now.
All told, you can not go wrong with a Greco purchase!! IMHO LOL Later..............