I haven't, that's really interesting, slightly on the complicated side to sell to people though.
So you vote both for candidate and party seperately and then once all the candidates are put in seats, they add more representatives designated by the parties to balence the party representation?
Local representation is not great for passing laws, but it is amazing to get things fixed that got bound up in the bureaucracy. Like expedite a passport, or figure out why a pension didn't come. Having your MLA or MP speak for you often has a greater impact than going solo. And it nice that your repw usually has a local office in reasonable travel distance, if you want to speak to them in person.
Note to mention that not only are they harder to scale attacks against, manual vote counts are easier to trust, As anyone can understand the process and how it ensured that their vote counted.
No matter how well they are protected it's hard to explain to the average person how a computer ensures their vote was counted correctly.