Very interesting topic and I am wanting to learn more from others about it. And so far it sounds like I should train with it if I am to use it correctly. I normally do not use it in training, but I am learning to not be afraid of taking walk breaks (along with just slowing down) and walking downhills to help with a knee ITBS thing.
I am going to repost something I put in the Springtime Surprise thread which is my internal debate about using RWR and being strict about it, or maybe using it when needed:
To join in the RWR discussion, I have successfully used the RWR method for the longer distances at the WDW races, but beginning to wonder if I might do better by having much longer stretches of just running. For the Princess Half, I was targeting a finish time and knew what overall pace I needed to get that, using a 90/30 R/W ratio. It worked fine, but there were times when it felt like I had to go really fast during the run portions to make up for the walks and ramping up from the walks was sometimes tough - could really feel my calves protesting. Then because of the bottleneck around Polynesian construction and especially the path between Grand Floridian and Magic Kingdom, I fell behind the pace. After Magic Kingdom on the road, I began stretching out the run portions, even sometimes just skipping the walk. I eventually clawed back the lost time and finished under my target time and was very happy with that.
Looking at the run in the COROS app, I was doing a lot of the runs fast - under 10:00, I even see a few 9:26, 9:37, etc. The way I like to run is to lock into a steady pace and rhythm and like a metronome just grind away, there is something just very satisfying about that. Now I know Galloway says to do the RWR from the very first mile, but I am thinking maybe I do a hybrid - get a nice steady pace, especially on the wide open roads, then use the RWR when I need to, walk through water stations, etc.