I wear the Boulder Boots to work every day. I do concrete work for a living and can be pretty hard on boots but the Lems hold up surprisingly well.
I find them super comfy but if you’re used to max cushioned trail runners then you probably would not agree. The Lems have a 10mm stack height which is probably less than half of what you’re used to. However, I bought a pair for my Dad who is also accustomed to super over built shoes. He loves the Lems now.
Not much traction on the Boulder Boots. I find that the flexibility and thinness of the soles allows my foot to form around stuff, which I feel increases traction. If your adding orthotics then you’re probably going to lose that flexible traction.
I don’t know how cold it is where you hike in snow but if the snow is very wet you may not like the Boulder Boots. They are not waterproof. The new all leather ones could probably be waxed or oiled enough to work in anything but slush.