I use this running off the clock of a DFAM to create Sample and Hold and Sine modulations, usually for augmented the FM amount or externally with a waveshaper. For the footprint, it adds a lot, and the internal clock divider/multiplier is extremely useful.
Perhaps one feature I'd have preferred is to swap the Noise output for a Ramp or Reverse Ramp waveshape, as a noise source is easy to come buy in most modular setups, but for what it is it's a great utility module.