Before our interview, Galway plasterer-turned-property magnate Luke Comer wants to show myself and The Currency’s photographer the stunning views down to the sea from a hill behind the Sugarloaf in north Wicklow, where he owns 260 acres of land.  The 62-year-old horse racing enthusiast and horse breeder keeps about 60 horses here, roaming in lush green fields that contrast vividly against the blue skies and the Irish sea beyond on a sunny September afternoon. There are over 500 more horses elsewhere, including at stud farms in Co Meath, Kilternan in south Dublin, and Co Kildare.   Among his stable is a…