Just to throw the cat among the pigeosn even further, sitting here reading this weeks edition of Bus and Coach Buyer (issue 1133) in whihc Stuart Jones does a multiple page story on his visit to the Irizar plant in Spain.  On page 27 he states the following:
"Bus Eireann is taking 20 two-axle i6 and 25 two-axle New Century coaches all with front door lifts which will also be Scania mounted"
I'm assuming that it should ready 20 tri-axle and 25 two axle but either way sheds some more light on the situation.  Interesting that they will all now have front door mounted lifts.