I remember seeing those S&W knives at the gun shows for a few years. Never bought one as they all seemed over priced to me. The patterns were nothing new or unusual and I never could find anyone that had used them enough give it a thumbs up or down.
I remember back around the 70s and 80s there was a lot of probing into the knife market by different manufacturers. I have this one that I bought new
with a 440c blade, heavy brass bolsters and a lockup like a bank vault, it has been a good knife. This of course was their response to the venerable 110, and I found it to be a much better hunting knife than the 110 for my purposes. (Image borrowed from the net)
Also at that time, Colt didn't want to be left out and had a line of knives under their name as well. You can find them on the bay, as well as on AAPK, etc. from time to time. Likewise, Ruger jumped in as well.
To my knowledge, none of those gun manufacturers made their own knives. Likely as Mike said, they were contracted out to Camillus or Queen from looking at their construction. Since they all jumped into the market at once and none really came out with anything completely outstanding, I think they all just faded out since they just became one more knife company competing with Case, Buck, Schrade, etc.
You can find examples of all these gun maker knives by using the Google image function.
Robert