One of the things that looked cool about blackbox to me was the support for encrypting the data with multiple keys and managing that.
I know some folks who use Pass and recommend it highly, but it seems focused on the personal use case like what you're doing.
I do still need to set up Pass myself, and was thinking about making an Alfred workflow to let me quickly access credentials. Does such a thing already exist? (searching for "pass" is not exactly effective :))