Leverage the User Agent value on Events

We want to be able to filter/report/segment based on the User Agent. This would tell us if the customer is using our native mobile app or instead, our web app on their mobile device. I concede there are various ways to track this info but the User Agent seems to be the most fit-for-purpose.

Using the 'Event Inspector', I can see that a value for User Agent ('ua') is sent and received with all events but the value is not persisted to the event (or perhaps it is restricted somehow).

It would be great if this could be exposed in the UI.