I personally look at edge retention as something cool to discuss, but in a different way in terms of actual usage.
I personally tend to avoid steels with the most extreme of edge-holding abilities. I find them to often be very difficult to sharpen, take too long to sharpen, priced too expensively, and often lacking the balanced properties that makes it ideal for all of the conditions an EDC will likely see. Cool steels for sure...but not my cup of EDC tea. So to me, steels like VG-10, CPM-154, S30V, BG-42, S35VN, ELMAX, CTS-XHP, 1095, 52100, etc. are what I go for. Good edge retention (and far better than most other steels), prices that are usually significantly less than knives made in super-exotic steels, plenty of toughness and corrosion resistance, compositions/carbide distributions that allow them to take a wickedly sharp edge (and hold it for a decent while), and reasonable ease of upkeep.
In terms of real-world gain of good, common, and affordable premium [mostly] stainless steels versus many of the exotic steels, I can't say I often see justification given how much more one may have to pay for a super-exotic steel, potential difficulty in upkeep, and how that steel may not have the balanced properties that makes it ideal for certain types of daily usage.
CPM-154 isn't awesome because it does any one thing so much better than everything else...in fact, CPM-154 does absolutely nothing on a scale of extreme impressiveness like, say, CPM-110v. But it's still awesome because it is that jack of all trades which gives users very good performance across the board, and that to me is what makes it such a great candidate for an EDC knife. As an EDC may see all sorts of various usage in which different applications will require different performance characteristics in steels, I think the balanced all-around steels yield the best performance for folding knives.
I generally personally carry something in CPM-154, S35VN, S30V, or ELMAX. And as cool as the limited editions Spyderco Para 2's are, the standard CPM-S30V PM2 is still just an absolutely fabulous, affordable knife, in great steel with great edge geometry, anyway you look at it!