Long time reader, first time fanposter.
Not sure if this is actually true or not, I would think that would be a pretty substantial equipment change for a professional athlete, although McCann has changed his mask style and gone through several eye wear changes so it wouldn't surprise me all that much. Also, this video of a recent rehab game shows him with a normal bat knob.
Seeing as how I have never played baseball at any real competitive level, can anyone provide any insight on how the difference in handle could affect the swing? I can imagine how putting a similar grip on a golf club could really change the way I swing, and I feel like it would give you less control over the club, and would think it would have the same effect on the bat as well.