I just installed the 11-36t 10 speed cassette and tuned the front/rear derailleur. After a bit of adjustment it works great. In fact big/big chain worked fine and there was still a bit of slack, not that I'll ever use that gear. At least I know I won't bust my chain if I accidentally go there! Honestly, I'm just really happy I can have one bike that does it all. The Shimano GRX groupset and gravel biking in general is just awesome!

I'll test out the new cassette riding the local hills this weekend and see if there's a noticeable difference. I'll report back in this thread!