A 25.5" scale bass will have the same tension with the lower 4 strings of a 5 string set. The notes will ring out properly, and you can intonate the guitar properly. Most 34" basses already have a ridiculous amount of sustain as is, so the slight reduction of sustain is really not an issue in most people's minds. The tone can go from "passable" to "is this really a shorter scale bass?" You can't convince me this sounds bad or unlike a p-bass. It sounds a bit thin because of how Davie mixes his videos in general (he plays very slappy, high mid/treble tone with little bass in general), but it's a real bass guitar with what looks to be 25.5" scale or something along the lines.