While any boot you use needs to fit, I found the Easy boot and Easy boot Gloves more demanding in terms of needing correct hoof angles and proportions in order to stay on.
I used Scoots for turnout and they rubbed my horse raw despite the padding. I’ve stopped using them as they caused a lot of toe stubbing and tripping with my senior due to the excess lip in front of the toe. Not a problem for a lot of horses. I would be a bit concerned about their flexibility allowing studs to create pressure spots on the foot. Careful placement should take care of that. I don’t like dealing with the reduced flexibility of Scoot straps in the sub freezing temperatures.
I also prefer boots that don’t need tools for application or removal.
I have used Cavallos quite extensively over the last year of hoof abscesses. Lots of mud and wet conditions mixed with snow and ice last winter. Never lost a boot. Cavallos do have quite large drain holes on either side.
While I did put a plastic bag over my abscess wrap, inside the boot, the other foot just had the boot on and I didn’t have any bacterial or other issues from mud/wet in the boot 24/7 (minus the time I had him in for abscess etc care). I didn’t use anything to prevent issues (foot powder, hoof spray, etc) either. I think the specific environmental conditions may require that in some places. I did swap out the pastern wraps for dry ones - though it was going on a wet foot more often than not so I don’t know that it made any difference. I do want to try Cavallo’s buckle closure as the velcro does get peeled back in the mud and wears out faster.
I use studded Cavallos for hacking out, and for turnout if needed. I’m not asking my horse to do anything other than walk carefully over the icy patches we encounter. If the trail is more ice than not I’m erring on the side of caution and riding in the arena. Last winter my horse was in the furthest paddock from the barn, along the driveway that had turned into sheer ice. I took my studded Cavallos out to the paddock, put them on him before bringing him back to the barn, and put them on for the return trip. It was kind of a PITA but I was glad I had the option. I wouldn’t have brought him in across that much ice barefoot.
I have been using Cavallos for something like 15 years, and until recently I didn’t have twisting issues. Something has changed in my horse and the right hind boot is twisting more often than not. I know someone else who had twisting issues with her horse’s hind Cavallos as well. So I will recommend using a different boot if you can’t resolve a twisting problem fairly quickly (boot size, boot width, gaiter, pad). Treks are the most durable Cavallo boot. They use the exact same sole as the Simples, and I think the ELB (entry level boot).