Alert Templates by User/Group

We have a customer who monitors some of their equipment themselves. They wish to have a custom template for just their users/groups. Short of changing the default for our entire account the only way to do this is with Integrations. The problem is that with Integrations the reply-to address changes from alerter@company.logicmonitor.com to api-alerter@company.logicmonitor.com. You effectively lose the ability to reply to alerts. No Ack, No SDT, etc. We would like the ability to have templates that can be easily assigned based on user.