Welcome i forgot to mention another pro to these shoes. That is especially important in wet conditions. The bottom of the sole to the side transition ain't a sharp corner so the shoe doesn't cut into soggy ground as easily like my older wet weather shoe Lowa Renegade GTX low. A shoe that wedges itself into ground can stop abruptly in place making foot pivoting impossible. Because there is momentum involved all the momentum goes into twisting the ankle, knee etc. No such trouble should arise with the Vivos. Toe heel toe and ball of the foot pivots are easy and unobstructed based on doing both at the store.
I don't know about the durability yet but the sole feels tough enough. It is halfway between VFF Spyridon and the older VFF models with the sometimes too hard and slick soles for concrete tees like KSO, Trek and Komodosport in rubber hardness. So if that indication is correct it should have no trouble in wear. I'd be disappointed in them if the sole didn't hold up because these were designed for off trail in the rough running. They start with the very deep 4 mm lugs and there is additional 2.5 mm of sole above them.
I put on the Vivo Breathes and they sure are well ventilated. I looked through the side of that shoe
But i have had no trouble with 5 finger socks with my Komodosports in summer heat. Sweating, hotness and smell are more of an issue without the socks but a non issue with the socks i have. They contain silver nitrate i think and it is antibacterial. So my VFFs smell less than regular sneakers
The Trail has a different harder material much less aggressive tread which based on Komodosport experience is likely to slip and slide on concrete and wet rocks and grass at times at high speeds.
How minimalist is an issue to some so beware that these are less minimalist (stiffer sole and about two thirds of the way from heel to front than the stiffer VFFs not to mention the 1mm sole ultra minimalist original minimalist shoes. The upside is that the rougher the terrain the better you are protected against kicking something or having a stick penetrate the side or hitting rocks. My home course is rocky and i always need to be aware of each step and obstacles with the VFFs. Even more so after getting a marathon runners nail except it has hung on for almost 3 months after breaking from the root. I don't think that i need to worry with the Vivos. More brain capacity to throwing
Finland is wet and snowy 8 months per year and standing in a puddle and sloshing around plus being immersed in snow is the norm and the summer is a brief respite in between so water repellency is pretty much a summer only benefit. Smells might be increased due to less ventilation than the best shoes. And for most of the year they'll get mud water inside or snow so they're gonna stink up soon. Not to mention coldness from water/mud solution sloshing around inside the shoe. Water proofing thank you very much.
Flat shots need running on the center line of the tee and planting each step on the center line. Anhyzer needs running from rear right to front left with the plant step hitting the ground to the left of the line you're running on. Hyzer is the mirror of that.