Unfortunately this is another victim to the devil's ingredient to spoil whisky for the angels - called sulphur... It is a shame as the sherry cask as such as well as the whisky spirit seems to be of a rather high quality. Creamy, nutty, rich - this could have been a great dram. But then the devil came in, burnt its sulphur candle inside the cask and smiled "If you still like this now - welcome to my whisky hell!"
No, I will not devilish any whisky aficionado who loves this taste and if you are not sensitive to sulphur this taste might even be bearable. Unfortunately, my taste buds and senses react almost allergic to this flavour so I can only state: "Another one goes down the drain..."