Our 2014 Cougar XLite has "drip rails" over each slide. There are no awning cover attachments on the OEM drip rails on my trailer. When I installed my slide covers, I installed the awning rails on the main slide under the attached factory drip rail. On the bedroom slide, there wasn't enough room to install the awning rail and maintain a slope, so I removed the factory drip rail, installed the awning rail in its location and then reinstalled the OEM drip rail above the awning rail.
So, I have both the OEM drip rail and the awning attachment rail for the slide cover attached above each of my slides. There are a few types of aluminum moldings that combine both functions, but on my 2014, Keystone didn't use that type molding. I have seen the "dual molding" used on more recent trailers, but I haven't seen it used on older trailers built before about 2016 or so.
2015 F250 6.7l 4x4
2014 Cougar X Lite 27RKS