Not good if you are on Shopify Plus and have multiple domains. Also if you care about the quality of your imagery this probably won't work for you. We have been doing everything we can to work with them with no workable response. We would go as far to say they were dismissive. We are moving to another tool.
Very good with one massive flaw
There is no seo with this, so if you want your page read by google forget it.
If you want title tag, you have to go via html, if you update your page, it will wipe out all of your seo, so what is the point in this?
Use it to build landing pages that google will never see.
For your front page, articles or anything for google, it is useless. I will update this when they fix this incredibly weak flaw. Avoid till then unless you just make nice landing pages.