Saints & Sinners & Rebels & Rogues Irish Whiskey is a blended Irish whiskey with a stated age of 21 years, placing it in the mature end of the category. For a new drinker, that usually suggests a softer, more integrated style where grain, wood, and cask influence have had plenty of time to settle together.
The Madeira cask mention indicates finishing or maturation in casks that previously held Madeira wine, which often brings an extra layer of sweetness and fruit. Expect an older Irish blend to lean toward smoothness and rounded character rather than youthful sharpness.