SharePoint Online Site Classification- Any early guidance or references?

So this article was recently updated on 12/21/2016. Anyone have any idea if the two activities, custom classifation and built-in site classification are compatible?

Implement a SharePoint Site Classification Solution

Even with good governance, SharePoint sites can proliferate and grow out of control. Sites are created as they are needed, but are rarely deleted. Search crawl is burdened by unused site collections, and search produces outdated and irrelevant results. Site classification allows you to identify and preserve sensitive data. This article shows you how to use the Core.SiteClassification sample to implement a site classification solution, as well as use SharePoint site policies to enforce deletion. You can integrate this solution into your existing site provisioning solution to better manage your sites.

Full Article: https://msdn.microsoft.com/en-us/pnp_articles/implement-a-sharepoint-site-classification-solution