They sound like normal strings but
the "coating" is barely there and i doubt it will make the string's life any longer,
these hate to stay in tune. (I put them on a guitar that I know stays in tune.)
I pray to Dr Groovy Elixir will come out with 8 and 7 gauge sets cause these shouldn't be a thing, just save your money and buy a couple sets of harley benton 8 gauge strings, they will perform better too.