This integration is as friendly as it may be. We serve all page metadata statically in the header section, so we don’t have any problems relevant to SPA sites. The next usual problem is routing. It’s also ok as we use native shopify routing. So we can use the same optimisation technics as for the regular shopify theme. The only negative impact which is common for all dinamically generated content that we can’t get way with —indexation time. Web spiders need more time to index dynamic content.