During the massacre in South Africa at the beginning of the year, Watling was one of the few players who returned home with his reputation intact. He produced a pair of 63s in the second test at Port Elizabeth where his calm demeanour at the crease was evident.
There have been calls to move him up the order in light of his strong showing in the Republic but as the old adage goes: 'If it ain't broke, don't fix it'.
Watling always had a strong grounding in wicketkeeping through his extensive experience with the gloves at age-group level but said he had refined his skills lately.
"I've just being working away at it for the last 14 months and hopefully improving each game and just trying to figure out different situations and different things that might happen in a game of cricket. So each game [I'm] just learning and making sure that I don't keep making the same mistakes," he said.
Watling uses McCullum as a sounding board for advice, while he also works with former Auckland wicketkeeper Jason Mills.
Watling's form leaves Ronchi in an intriguing position. The Dannevirke-born 31-year-old, who played a handful of limited overs games for Australia between 2008 and 2009, has now qualified to represent New Zealand after observing a four-year stand down period.
He made bucketloads of runs in the Plunket Shield this summer - 807 at an average of 62.07 to be exact - including four centuries and was included in the New Zealand XI to meet the travelling English side earlier this month but had to withdraw through injury.
Ronchi is now back in action with Wellington in the domestic one-day competition and will remain in the selectors' thoughts but Watling is proving he can't be discarded.