We used the Jescar-sourced EVO wire primarily for conversion of fretted instruments for those alergic to nickel. Acoustics were fairly easy and a Strat was a major project, as stainless may or may not be nickel-free, depending on alloy and where all the bits were sourced (lower-end stainless hardware is a roll of the dice on nickel contents, so every component of a hardware package has to be tested). We've since determined that Jescar's stainless is consistently nickel-free in several sizes, so have substituted that for the EVO.
While what the boys called an initial flood of EVO wire use did occur at the onset of that's wire's entry to the market, when I was there, we did a lot of stainless and nickel, and very little EVO. It may be that this was one of those 'all the other kids are doing it, Mon....pulleeze?' things that we see in luthiery (aka, the 'AGF-Standard guitar' which was a small jumbo with specific features and gold Gotoh 510 tuners, etc.), or just the reality of the corrosion issue mentioned. When I left my formal arrangement there, we were still doing a few guitars every now and again for one player, and those in the shop saw that work as punishment duty.
On hardness, EVO is close to the mid-point between nickel silver and stainless, but at Greenridge, we were more concerned with the strings used versus fret material, with stainless bass string sets being the worst for wear on 4 and 5 string basses. For one ex-'80's California ex-punker and later ex-grunge player, EVO wire tripled the time between level/crown/polish and refret, while stainless frets have apparently tripled the time between refrets over EVO, as we heard from, but seldom saw him back for fretwork.
This move from nickel to EVO to stainless was noted at Greenridge, with the usual nonsensical aversion to stainless yielding to fiscal realities when for most touring players, nickel was a constant maintenance item, EVO bumped up the time between major fret work, and stainless was effectively a career-long solution.
We could get into the politics of sourcing with the Russian invasion of Ukraine, but the net is that most raw and somewhat refined materials that can be put into a cargo hold or shipping container (versus transported under pressure/need constant refrigeration) in a global world are priced based on the last 2-3 percent of supply, so European manufacturers of all those wonderful things we depend upon (luxury German automobiles; paints, varnishes and other surface coatings; Airbus aircraft) chew through available supply of precursors or materials like aluminum, titanium, and 3K surface coatings originally sourced from the Russian sphere pretty quickly, depending on secondary sources to back-fill demand, thus pushing costs up to the point where minor manufacturers shut down those portions of their product line dependent on that last few percent of scarce, very expensive materials.
Now that the Russian leadership appears to have elected to move towards becoming a Chinese satrophy, thus allowing the current regime in Moscow to stay in power for a few more months/years, I do not see any improvement in store for things like EVO wire or titanium alloy hardware sets. Stainless is pretty easy to find, so that will be the ongoing substitute for most EVO wire, with most luthiers I know leery of the brand X substitute for at least a few years more of feedback on the stuff. With Russian gas unavailable to Europe, but the US LNG and Norwegian gas supply in the market growing, I am hopeful that we do not see more disruptions in the natural gas-tied chemical and coatings market.
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