Aren Lindy/Swing and Salsa hard to reconcile?
Not really. Since they are both on eight counts, most of the moves transfer over relatively painlessly. There are differences in the steps and styling, of course, but the upper body work is largely the same. Salsa and Latin dances in general have a very different feel, with different breaks, variations, and Cuban (hip) motion. All of these things can be transfered back into swing.