If you get to order a KoT from Analogman (the waitlist is years long), you have different gain options on each side. My first one was high gain on red side only, but I found there was really not a lot of usefulness in the low side of the stock channel, so later got one with the high-gain option on both sides. I recommend that to just about anyone as there’s really no downside to getting that extra bit of drive.
Even with the higher gain, it’s not a massively gainy pedal, which I much prefer. Like the Klon Centaur, the main reason you see these used by lower wattage amp guys is that they excel at taking a amp at the edge into a kind of drive that just turning up a preamp knob doesn’t accomplish. I’m not saying you can’t put one in front of a Recto, but these pedals made their magic in that classic rock and blues sort of overdrive, rather than crushing distortion. And they are superb at that thing they do.
Prices on them in the used market aren’t Klon-stupid, but they’re definitely high. But if you like what they do, then beauty (and the cost of owning it) is in the eye of the beholder!