A local high school spent $240,000 replacing poa supina on its football and practice fields 5-6 years after it was built. It was a very expensive seed (over $25/#) at the time and absolutely the wrong choice for a football field. If the price has come down it might be suitable for shade in the sense that other blues won't do well there. Just know it is aggressive and has poor color potential - 6 on NTEP scale if memory serves. I will be interested in how this does for your application of you try it.