Can someone who has actually used the Mizuno Wave Horizon 4 for running provide some honest feedback on how it handles repetitive high-impact training sessions like those experienced during intense cycling off-season cross-training, particularly in terms of how its U4icX midsole responds to different running styles and whether it offers enough stability for runners with a neutral foot strike, and does its smoothride technology really help to reduce the impact on joints or is it more of a marketing gimmick?