There is indeed only one Mike that goes down the pub (although a slightly different one seems to come home…), but I don’t think that equates as naturally as you suggest (in certain environments, for example, not a million miles away..) to “hey, everyone is open”.

So while I’d agree 100% about your “open, honest, real viewpoint”, and value both your Twitter and blog accounts for doing this, I suspect there are many companies who would see this as incredibly threatening.