I've talked to him a couple times recently at Mayor's cafe in Pines and yeah, when he walks in the door, the entire place stops. He almost doesn't look human.
The only other person I've ever seen in my life that I was that close to that compares is Kevin Durant. He looks 12 feet tall in person and his arms hang to mid-shin. He legitimately looks like an alien. I'd imagine Shaq is the same way, but I've never been that close to him. McKinnie is honestly the size of 3 normal people but he doesn't look like a fat person. It's incredible.