Salesforce Integration user license for Marketo sync

Has anyone tried using one of the new "Salesforce Integration" user licenses rather than a "Salesforce" license for the Marketo sync user? https://help.salesforce.com/s/articleView?language=en_US&id=release-notes.rn_api_integration_license.htm&release=242&type=5

Salesforce recently granted 5 of these new license types to Enterprise orgs, and it seems like an opportunity to save money and improve security practices (orgs often share the same integration user among different integrations, like Marketo, because the Salesforce user licenses are a big expense).