Here's an update. We cut the cheese last night. (Insert joke here).
It's 9 month old. It looked good.
I took one half to a potluck with two other cheeses, a purchased brie with truffles and a purchased cambozola, and put out a nice cheese board. Everyone who tried it said it was good.
The texture is firm, but crumbly when you cut into it, and sooo creamy once it gets into your mouth. It doesn't slice well. The flavor is definitely aged cheddar, kind of mild, without that sharp metallic taste some aged cheddar have. IMO it could have used more salt.
The kicker for me though, as we were preparing to leave and I wrapped up the leftovers one of my friends came over and picked up the cheddar and jokingly said "I'll just take this home with me". I said "sure", and as he turned away another friend said "Hey I get half of that, host's privilege!"
Now I'm interested in opening the 6mo old cheddar to see how it compares.