Both of the sample quilt layouts illustrated using the Lucky Clover quilt block set the blocks on point. The quilt on the left uses additional half blocks and sashing, which (to me) gives a look of "plaid". The quilt on the right uses fewer quilt blocks, but adds additional interest by changing up colours of the extra large triangles and also adding sashing between the blocks.

More "Irish" Quilt Blocks
~ Connemara
~ Danny Boy
~ Dublin Steps
~ Irish Puzzle