This pedal does wonders in giving vintage warmth to some clean tones that had been sounding a little undercooked in my setup. I got the sound I wanted by dialing the treble most of the way down and keeping the gain at about 10 o'clock.
I've heard this is an accurate Klon sound, and it's definitely worth trying at this price point to see if this type of pedal works for your sound. The demos I was finding mostly showed the more aggressive things it can do, but it has a lot of other possibilities.
I noticed a little noise in my setup if I raised the treble above halfway.