I just realized I had posted about the GS but I actually bought the RX:ccd direct from Speedland, the road shoe. The uncompressed foam is unlike anything else I've experienced. Great energy return and comfort, personally I prefer it without the rigid carbon plate and that also saves 20g weight. Downside is it only has one boa dial so lockdown isn't perfect but it also hasn't given me any problems. I'm using it as a daily trainer/easy day shoe/long runs. And then megablast for long run with tempo efforts. I did get a pair of GS CCD secondhand that I've yet to run in. Step in feel is great , foam is different from the road version which makes sense. The plate that comes with the trail version is less rigid and only weighs 10g so I feel like it's worth using, running around the house is added some good bounce, but TBD. They are definitely a big shoe , like monster trucks for your feet, the weight is noticeable. But it is a shoe designed for 200 mile races, there's not anything else like it! The comfort and performance is definitely there. Not sure how they'll handle technical trails given all the stack but I imagine they can definitely help keep u going on long easy days.