I just want to add my 2 cents here that this was my primary use of this site and it will likely reduce how much I purchase.
The reason is this: I download a sample of every video I'm interested in. Then later when I have time, I watch them with DeoVR and mark which ones I plan to purchase later. I have a quite long list of videos I want to purchase now because of this, categorized by type of video, quality and I can name them for the memorable scenes. I have built my library of purchased videos in this fashion; it's a great experience.
If I'm forced to watch samples using the SLR app and not DeoVR this is not good because often the SLR app will not work for me (it only works on some days, other days I get an error that it cannot connect to servers and will not load). Also there is no way for me to organize videos into multiple groups: trailers I want to watch, vids I liked, vids I loved, different types, and levels of quality. We'll see how this goes, and I have a lot of downloaded samples left to watch still, but I don't think this will work well for me; it is the feature that set your site apart from the others and now it's removed.