Gosh! I really didn't mean to stir anything up earlier, but it sounds like we may all be getting a better understanding of the topic at hand.
With that said, here's what I can tell you about the Rough Rider Gunstock Lockback: As I said, it was just a knife that looked sort of interesting, so I got it. That's one of the things I love about RR's - if you're even slightly interested you can just buy it and find out!
First off, the knife is pretty big - at least by my standards: 4 5/8" closed. And, the relative narrowness of the blade makes it look even longer open. Art, I believe you asked for an in-hand photo so here it is:
2012-11-13_16-54-17_853 by
69murray, on Flickr
I'd put my hand size on the small side of medium, if that helps
In use that blade really does a great job of slicing. It'll press right through a Subway Italian on wheat, let me tell you.
As far as fit and finish, it's up to the usual Rough Rider standards with some minor gabs between the spring an liners, but nothing you'd notice without really trying. The spring is about right for a lockback - not quite as stiff as a normal slipjoint, and the lockup gives a nice positive snap with no blade play up, down or sideways. Blade centering was also spot-on.
Untitled by
69murray, on Flickr
Oh, and about that thumbstud

It's pretty big, too, but it does make it pretty easy to open one-handed. If my hands were slightly bigger, I could probably do it in one smooth motion, but I find myself adjusting my grip slightly about halfway through in order to open it the rest of the way. I find I can also 'flick' it open fairly easily, with a little wrist motion.
If you don't like the thumbstud, it removes with a screw from the opposite side, and the blade is easily 'pinched' open.
You've probably noticed there's a pocket clip on it as well. Yep, but it's also removable. I carried it clipped to my pocket and that worked fine. I would say this is a good alternative if you want the convenience of a one-hand opening, pocket-clipped knife, but your work or social environment might not be too friendly to those scary 'tactical' knives. I would say that, but for the fact that that blade just looks so long and the shape so 'sword-like', once it's open...well, just keep that part in mind.
Here are a couple more shots, showing the relative size next to some of my other favorite Rough Riders:
2012-11-13_16-53-36_523 by
69murray, on Flickr
I said it was pretty big, but it's not the biggest. That Coal Miner Work Knife (sodbuster), is a little bigger (and much wider and heavier). But, as you can see, both are bigger than a fully opened Canoe:
2012-11-13_17-36-10_32 by
69murray, on Flickr