Yeah, right now in Massachusetts, pollen is covering everything, so I wouldn't want to try it now. Probably in the Fall, I'll give this a shot if I still have the urge.
The lacto comment makes sense as that relates to sour beer, doesn't it? I'd like to try souring some wort to make stout some time. I already hold back some wort for carbonation in my kegs, so I suppose that would make things a bit more complicated.