I have done some private development on salience models and use them informally with spreadsheets. DeMesquita expands on them with his predictioneers model, which there are a few repo's of code for.

To understand salience models, I think people need a background in traditional negotiation so that they can have the tools to apply to the model once they develop it. It's the why behind the model. Negotiation overlaps with organizational psychology and business strategy, and these days, political tactics as well, but for someone who doesn't have a background in this and who are the sort of person who still tells recruiters and hiring managers their current/last salary, it's not useful to throw them into the deep end.