The mirrorless format has not matured to the point I'm comfortable making the switch, personally. Do I wish my Big Tam' (aka the Tamron 70-200mm f/2.8) could shed a pound or so? I sure wouldn't mind, I admit. But, that being said, I don't mind the weight of my rig at its heaviest. I also know do not like the ergonomics of any mirrorless I've actually held. And from what I can tell, when you start putting on a zoom lens (or an adapter or both) and a competent flash on a mirrorless body, the overall size difference between them from a practical standpoint is not all *that* significant in my estimation. In a few years I think the mirrorless format will rein supreme but to my way of thinking, it's just not there. Not yet, or least... Not for me.
It will be interesting to see what the mirrorless format looks like/has to offer a year from now. I'm fully prepared to "eat" this post at that point in time.
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