Simple-date vs local-time

Hello, I'm working on moving an existing application to Postmodern, and I'm trying to decide whether to go with simple-date or local-time. Currently all dates are stored as "timestamp without time zone," but we are hoping to move toward a timezone-aware model at some point down the road (although not immediately--it might end up being a couple years). For this reason I'm considering using local-time instead of simple-date. Times and dates are a big part of the application so I'd like to get this right. I notice that the local-time cl-postgres integration has not had any commits in a few years. I'm hoping this is because it is stable and complete. Is anyone using it? Thank you, -Eli