I thought about this a bit and finally came to the conclusion that the way the official app handles this is the best approach.

Generally you would want to use this as a way to swipe to the previous / next item in a list after you chose an image from the gallery view. This in itself makes sense and it a valid request.

The way the official app handles this is to offer a toggle between gallery and feed view for all logical cluters of images. So instead of swiping you would just scroll to get to the next. As the gallery view is essentially the detail view anyway it makes no difference and acts as a vertical swipe.

Summary: Good point, I'll add the gallery / feed view toggle

What do you all think?