I took the plunge and converted my custom webpack site into a sapper based one.I couldn't be more impressed with the integration, performace, and the tool itself.
I started out this site with Drupal 5, and hopped on the static site generator band wagon early. Having your content be plain text markdown really does make it easy to move your hosting around. This is my 4th cms migration and it's really been a dream. I'm not sure I could go back to a DB managed cms.