Dean: With all due respect, unless one or the other has made some changes, since my last purchase of both, they are NOT the same kit. Perhaps Woodcraft could be buying from Berea and Berea, I suppose, could be buying from two different manufacturers, though I doubt that also, but there is a difference in the lower barrel of the two pens. I refuse to buy the Wallstreet III because of it. The transmission carrier on the Sierra is 12 mm in length, whereas on the WSIII it is only 2.5 mm in length. It just seems to me that this would cause the Sierra cap and transmission to attach with less slop and more structural rigidity. See attached photo. I have the lower barrels laying on the packs they were in.
My guess is that you have 2 different generations of product there... I've had both the long and short of them but I don't have any in packages at the moment to check which came from where for me.
You could be right that they have split off of some of them to make their own - I'm sure their product agreements are a complicated thing.
However, what I said about woodcraft and berea is true - there is some kind of tie, but I don't know the exact details of course. When a new product is released by Berea, woodcraft gets another named version of the same thing. I know this because I watch woodcraft to get my hands on them before choosing to wait for a web order. They are released too close together to be a clone or coincidence. Examples: princeton=virage and there is the triton and reinhart (why they kept the berea name on those and not others I don't know).
All that being said... back to regular scheduled programming... you asked for comments and criticism - I see NOTHING to critique on the pen, it looks great. The only constuctive comment I'd make is to consider something other than white (or tone down the contrast?) for the background - it tends to highlight the fringing and feels more "harsh" to the eye IMO unless you can get the expose just right.