RadSlideView takes as ItemsSource a collection of data items and through the ItemTemplate you can visualize the data in the way you'd like.
There is no problem placing more than one images in the template - just the proper bindings of the images sources should be applied. I have created a simple example where the ItemsSource of the SlideView is bound to a collection of strings as each string is actually the image source path. The binding context of the ItemTemplate is only the concrete item, still, through binding with Source set to the SlideView instance, you can get access to the whole ItemsSource and take the previous/next image. Keep in mind this does not work completely as Apple CoverFlow as SlideView is a different component its specific design.
Please download the attachment and give it a try. I hope the approach would meet the requirement.
Virtual Classroom, the free self-paced technical training that gets you up to speed with Telerik and Kendo UI products quickly just got a fresh new look + new and improved content including a brand new Blazor course! Check it out at https://learn.telerik.com/.