Since the '74 KS125 came up, I think it was probably the best of the true vintage dual purpose 125s. Mine weighed less than my friend's '73 (or '74 -- it was blue) DT125 Yamaha (which had an electric start?!?), had a 21" front wheel, the lower, thinner saddle of the last of the dual shocks, and a six speed tranny. If I remember right, the pegs were even serated instead of ribbed rubber.
It wasn't an Elsinore, but would beat the Honda Elsinore wannabe dual purpose, borrowing a lot from the Elsinore technology. A guy in the neighborhood who raced a sponsored Penton, then an Elsinore with all the tricks, thought it was impressive (back then) compared to the Yamaha (the Suzuki TS wasn't much in those days, and even the TM was behind the curve). The KS was almost the flagship frame geometry that later became the first KX125 --- which then proved itself to be behind the curve regarding the new suspension. The YZ and RM rewrote history, followed by the CR.
But the KS had it's moment, and I WAS THERE.