Mark O Neill seems to a very highly regarded coach who has done plenty of work behind the scenes.
According to article below, Gilchrist rates him as the best batting coach he has come across.
Could be a good move. Samarweera was a student coach, still learning, first real assignment. This guys an absolute pro who has worked in three countries and with the very best in the business from several generations.
http://www.theaustralian.com.au/spor...137beb978e9ffa