This goes against my many years of wearing workboots. I'm not an expert, but others looking for fitting advice will read this and I feel like the discussion needs to be had.Proper fit is first and foremost snug at the ball (widest part of the foot). This connection "holds" the shoe or boot to the foot. The reason choosing a longer length size but more narrow width could make good sense is because that more narrow width helps produce the snugness at the ball of the foot.
A footwear last and, or a pair of shoes/boots has approximately .5" of longitude at the ball area. It's not a fixed point. So , while staying within that .5" of longitude a consumer may try on two different length sizes, as well as several width options, to find the desired snugness at the ball of the foot while also receiving ample room at the forefoot/toe area of the shoe/boot.
So, the bottom line is that a proper fit is snugness at the ball (widest part of the foot) combined with ample room at the forefoot/toe area. To achieve this it does not matter whether a consumer chooses longer and more narrow or shorter and wider. To the company's credit, Nicks makes available 7-10 widths, so achieving a proper fit is relatively easy.
"Snugness" at the ball is not comfortable. That area of the foot needs space for splay, flexing and swelling.
Areas that you want locked down to keep the boot in place is the heel, instep, arch and sometimes ankle/calf depending on the activity.
However, not the ball or toe box. You want space there, especially if you're working. Must be able to wiggle your toes and flex at the ball.