As others have mentioned, the White Whale and Metropolis function well together and are fairly complementary when making rhythm and melody-based compositions with a modular. While it may be a bit overkill, a Metropolis controlling a baseline with the White Whale on kick/hat/snare duties is an awesome recipe for electro tracks.
I like using my Metropolis as a master clock if I’m going to be tweaking the tempo in real time, as there is a noticeable normalization period when feeding the Metropolis changes in tempo via an external clock.