Well the Trizor XV came. I sharpened about 10 stainless steel kitchen knives over the weekend -- straight, serrated, some 20 degrees, some already 15 degrees. The best knives I have are some quite old mid-range Henckels in a block, then a bunch of random cheaper knives. No high end Japanese or carbon steel knives. Took maybe 20 minutes.
Total awesome sauce. At least for me. Now all my knives are 15 degrees and very sharp. Soooo much sharper. Maybe not artisanal whetstone 15 degrees sharp, but much sharper than before and very quick/easy to do.
Given how easy/better my in-house sharpening now is, does not much matter if the new sharper edge on my softer steel knives might not last as long as a 15 degree edge would last on a high end $$$$$ hard steel knife. And since my knives are meh or worse, I do not worry about grinding off a lot of material. If I have to buy a couple of cheap new knives 10 years from now -- whatev.
I also suspect that I won't need to be doing a lot of grinding in the future. I think constant honing/steeling (which I already do anyway) will maintain the edges quite well for my moderate home use scenario.
As someone said above, this electric sharpener is 80% of performance with 20% of effort. For me, spending the $$$ on the electric sharpener makes more sense than spending the $$$ on high end knives and then having to sharpen with whetstones or an outside service.
YMMV.