That's an interesting idea, Jim - what if the "SR" came first, and then Swamp Rat was named to use those letters? HMMMMMMM...
It did come first.The Ground troop is indeed the Busse Taliwacker. This picture was taken right after 9/11 and these were the Taliwackers that were given to the Military by Busse Combat. This was really the first "Swamp Rat" although it was really before Swamp Rat was in business. It was officially produced by Busse Combat, but it has the same features that were later Swamp Rat. (ie SR101 steel, Resiprene C handle, no talon hole) There were a limited number of these released to the public, the only difference is that the civilian ones were lasered with "Taliwacker" (as in Taliban wacker)
Tali-Whacker Gallery