In reply to Aimee.

That would be the recommendation, correct. TT1 Blocks is a block theme, so it enables experimental Full Site Editing features.

But, there are plenty of folks (WP Tavern included) who run Gutenberg itself in production. We're actually planning to relaunch our site's design on a hybrid/block theme sometime soon (more on that later), so it will be interesting to see what sort of problems we run into in a real-world test.