A terrific utility for any analog system.
Any modules that can be fed a signal in parallel become a modulated system with internal feedback loops. This greatly expands capabilities of any pair of filters or waveshapers.
For other uses, the module is not very useful, it is basically just a pair of panner and crossfader, and they cannot be used together. As a VCA, the module is also not very convenient.
The build quality of the module is excellent, no complaints about the sound, no clipping or noise was noticed.