The delete of about one million rows from a "parent" table with no matching rows in the "child" table, and no index on referencing column in the child table, took 24:17.969 using current triggers and 00:03.262 using the set-based triggers. Yes, that reduces current run time for that case by 99.78%
That is really incredible. Gets rid of the need for an index on referencing columns for a ton of use cases.