The main issue with most reviews I see, is the fact that a lot of reviews claim you have to hunt around in the menu to change the focus mode. In reality most e-system a direct access button and is only a couple of presses to select the mose you require.
Infact, you don't have to delve into the menues to change any of the functionality of the e-system cameras (as is claimed by many reviewers) as you just select the value on the read LCD and then use the wheel to change it.
And yes, since I got my 70-300mm at the weekend, I have found the AF/M mode excellent.