Former T20 international and renowned wicketkeeping innovator Peter McGlashan backs the move; he wore lighter pads and a face mask when standing up to the stumps.
"It's a matter of playing the percentages in T20 where the chances of getting hit are slim. The advantage is that BJ's more mobile. It's great to see players taking such initiatives; Brendon [McCullum] also experimented at international level."
Last year when Watling was injured during the Lord's test, McCullum kept to the pace bowling without pads, a move which caused much harrumphing by the traditionalists.
McGlashan says: "[In T20s] You have 120 deliveries where few balls get past the bat and perhaps a dozen dodgy throws which a quality keeper should fix. There are probably going to be one or two incidents where you risk getting hit on the shin or knee. In return, a keeper will gain time settling themselves while running back for a catch rather than having to dive."
McGlashan says opting for the lightweight option mightn't be sustainable in first-class cricket even though a keeper would expend less energy lumbering around.
"Getting hit early on a full day's play would be different because you've got to factor in the bruising and the time it takes to reduce the swelling. That could have a greater effect on performance for the rest of the game, whereas, with 20 overs, you can get off the park quicker."
McGlashan, who has worked as a sounding board for gear company Aero, is intrigued as to whether Watling's trend will take off commercially.
"[At Aero], we recruited a couple of engineering students one year to design wicketkeeping protective prototypes but manufacturing and marketing them is the challenge.
"If you can't sell them because Joe Bloggs thinks they're too radical or expensive for his needs then the product is dead in the water."