True story - I worked with Fetterman on a community improvement project when he was mayor of Braddock about 10 years ago. Didn't work super closely with him, but he was pretty involved and the project was successful as part of his attempt to revitalize a horrifically depressed town (if anyone wants an example of a formerly legit town that completely went to crap after all the middle class manufacturing jobs left, Braddock is a great example).
Back then - I'm sure he's been compromised at this point - he was quite genuine, forward-thinking, no-bullshit, etc. and he was very engaging when he was invited to address our entire organization at a retreat. Didn't follow his career too closely after that, but in thinking about how he was back then, it's surprising he is where he's at now (hence the compromise comment).