Since we had the OPC UA webinar yesterday, I think it would be appropriate to make a very brief point about the two prospective products. OPC UA goes the big standards route. You have to invest in a lot in terms of the object model and infrastructure, but it offers a lot in return. If you want industry standards and a big, robust infrastructure, OPC UA is your path. PI Web Services, in contrast, was designed from the start to be the way to get data out of PI with a minimum investment of time and effort. I'm grossly oversimplifying, but the only things the two have in common is web service protocols and PI data.
So -- do you think the path-context-manner-column calling convention meets that design intention?