Ion-slide-box - detect attempt to move past 1st slide

I’m showing a set of images using ion-slide-box as a basic carousel in a dedicated state.

The user can return with the standard back key, but I’d like to be able to detect the bounce event when attempting to swipe back from the first slide in the sequence and automatically return.

Is there a way to detect this?

I’d considered adding a dummy slide to the start of the list, and skipping it on first render, but that leaves the pager looking odd, and seems clumsy.