My thinking also, I played them in a couple solid bodies and thought they were good, but in a semi hollow I’m blown away by themOne swap I had done was in an Epiphone '63 ES-335 guitar, japan made, part of the elitist series. Came stock with Gibson '57 Classic and Classic Plus in the bridge. Too hot, on the harsh side. I found a used set of SD Seth Lover humbuckers and tried them. Big difference. Just right power and volume, sweet, twangy sound. Plenty of great boutique humbuckers around ... but hard to go wrong with these Seth Lovers.