Experience with 5.7 Migration Tool

Permalink
Hi all, I am wondering if anyone has tried to use the 5.7 migration tool to convert their 5.6 site to a 5.7 site. If so, how well does the tool work? What are the issues? How much cleanup was required after the conversion?

My current concrete5 website connects to an external MSSQL database to retrieve most of its display data. Does anyone have experience converting a site that uses an external database?

I am trying to understand how much work will be required to convert my site. Any insight would be sincerely appreciated.

Thanks.