BIG-IP DNS (GTM) - any wide-IP or other GSLB artifacts replicated via DSC HA pairing?

Using GTM 11.5.3.

Trying to figure out if there's any value for us in HA pairing GTMs, vs. having them each be standalone. We don't use them as LTM load balancers; however, there ARE pools and monitors, associated with the wide-IPs we use. I assume those artifacts are replicated across all the GTMs in the mesh via the standard iQuery sync group for GTM objects, yes? What objects on a GTM box would drive any need/value in having a DSC-based HA pairing?