I must have missed that memo. Sure it's remarkably flexible and simultaneously accommodates other approaches, but most of the code I see in the wild leans fairly heavily into a functional style. I posted a CL link in an adjacent comment.

Here's an example that mixes in a decent amount of procedural code that I'd consider idiomatic. https://github.com/ghollisjr/cl-ana/blob/master/hdf-table/hd...