I'm in the process of adding responsive design to our website and one of the main features that users interact with is our image gallery (we are an editorial-based website). At normal viewport sizes, the user would click on our left-right arrows to scroll through the image gallery. When moving down to tablet and mobile size, we want to give the users the ability to swipe to cycle through the gallery.
Would it be too much to keep the left-right arrows in at the sides (note they will be scaled down to give more viewing space for the images) AND also have swipe capabilities? What would be the most intuitive way for our mobile/tablet users to recognize that our gallery is swipe-able?