Opinions on Sigma APO 70-200mm F2.8 II EX DG MACRO HSM Lense

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I would like to find out if anyone has any experience with this lense. Since the olympus lense that I would really like is too much money, I thought I would get this one. Before I purchase it I would like to get opinions from other people. I have looked for reviews online but haven't been able to find any.

I am looking at getting this for taking indoor sports pictures, I am hoping that the f2.8 will let enough light in for some good pictures. Any opinions on what I want to use if for are welcome as well. Specially if you know of a different lense for the Olympus E-series that is relatively close to the Sigma in price.

Thanks
Jason