You're just full of useful information these days! Anyone have a Realsteel Griffin?
I have a couple of Real Steel Knives. PurpleDC is correct, partly, in that they just re-brand other knives...mostly SanRenMu. In fact, I kinda think that RSK might be the "upscale" division of SanRenMu.
I have their E77 and E79 which are both identical to SRM models...EXCEPT...the RSK models have true locking mechanisms whereas the SRM are friction lock only.
I also have their E963 which is an enlarged SRM clone...and can honestly be found a lot cheaper without a RSK label. It's really not that great a knife.
As far as I can tell their H6 Blue Sheep is an original design. I have one and like it a lot. It's kind of like a RAT1 on steroids. It's well worth a look if you like the RAT and probably a better knife. I think this is the knife that might get them on the map if they can ever get it out at a reasonable $35-45 price point.
My last RSK is the Stinger in gold anodized that I was able to pick up for WELL below MSRP. I think it's also an original design too and seems to be a well made knife...at least in the $75-150 Kizer range, nowhere near the MSRP.
It looks like they have some cool designs coming out and, like all the RSK's, I expect them to be well made. The problem is they're very hard to find in the US. Apparently they market mostly to Europe, in fact if you look for reviews, most are done in German or Russian. The few distributors that sell in the US mostly sell at MSRP, and that's way too high for these knives. If they ever get a serious distributor Stateside, they might be a knife maker to be reckoned with.
I'd post some pictures but most of my knives are packed up and far away from me!