I have medium women's hands. I actually find it more ergonomically 'right' for using the shutter button as well as the two dials--it allows me to move my fingers a bit forward and up if I'm describing it well. I tried John's technique of resting the second finger on the top of the grip, using index and thumb for the two dials and index for shutter. It should be comfortable for a man I would think. To add--it takes a bit of practice for a short time--or for me because I needed to learn a bit different hand hold.HAving the Oly grip and using the shutter release on the grip all the time I wonder how good you reach the shutter release button with the JM grip?
For those that are thinking of the combo-- I'm a two handed shooter and I decided leaving the L bracket on the left all the time actually made it more comfortable for my left palm.