I also own two of Sean's knives. I have a Seraph and a Scaetha, both of which are discontinued models from the Antiqua series. These knives are 1/4" thick A-2 stock with differential heat treatment and the Scythe Grind, which I think Sean has also moved away from. The Scaetha is the Bright Steel finish and is also textured, and has a 2" Wharncliffe blade with 3" handle. The Seraph is similar to his classic Kerver design, with an OAL of 4", and also has the patina finish. Both are equally beautiful, and they are awesome to use! I think they are plenty sharp, but since Sean has moved to 1/8" and 3/16" stock with flat chisel grinds he says the Antiqua Series feel like baseball bats compared to the newer models in terms of sharpness!
Sean is a pleasure to do business with, tests each knife to the limit, and generally uses a rather abusive method of even making and heat-treating the knives, so you know you are getting an absolutely tough mother of a knife! You can see pics of my two on my webpage at:
http://www.geocities.com/CollegePark/Lab/1298/knifehome.html
Just click on the section that says pics of customs and you'll see the knives. I also have an interview there with Sean Perkins that tells a lot about his mentality toward knifemaking and his process. It's good reading. In short, I can't say enough about Sean's knives. I carry one of the two I own on a nearly daily basis, and the length of the knives is not even a consideration. They are very ergonomic and can tackle any job you would think of for a folding pocket knife. With prices starting at, what, $35 these days(?), you can certainly do yourself a favor by picking one up. Sean's website is continually changing, so he may have a bunch of stuff available that isn't even pictured. I think he is working on new designs to unleash on us, but then again he always is, so set aside a Perkins account right now!
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My Custom Kydex Sheath page:
http://www.geocities.com/CollegePark/Lab/1298/kydex.html
Palmer College of Chiropractic
On Two Wheels
agocs_s@dd.palmer.edu
Madpoet (Mel Sorg, Jr.) Tribute page:
http://www.geocities.com/CollegePark/Lab/1298/madpoet/main.html