The mmi3 bats are great fun, aren't they! All middle and power. Wouldn't want too many short and quick balls
I still prefer a 'normal' bat when batting though.
I've only used mine in the nets. Anything "in the arch" was fine as you can just swing from the hip.
Anything short or back of a length made me very concious of the missing blade. Once my teammates worked this out, I found myself backing away to square leg when using it, as I didn't want to be in line with a short one.