Ongoing issue. More players are incorporating an Eye wedge or 2, not just Phil and Daly. Hunter Mahan for one I believe.
Phil only uses a 60 degree wedge that is bent to 64 degrees. A 64 degree wedge that many players used prior is now utterly useless with the new grooves. The ball just slides up the face too much.
This is mostly where the old school Eye 2's are being utilized. A single lob wedge put into play. There is also a counter argument that new clubhead material and design advancement outweights or offsets any advantage that the old grooves might garner.
It will be an interesting debate as the season continues, with pro feedback and more testing from Iron Byron.
And Phil has more equipment knowledge than probably any other player on tour. He is constantly testing, tinkering, and reworking his clubs in concert with his manufacturing sponsor, Callaway