Hi, Phil,
we just had a 2 weeklong WFM course taught by one of the people from Genesys PS. He really knew his stuff and was able to walk us through most of the product features. He did mention that WFM would work with both Genesys 5 and 6, but you will need to be careful with configuration server, because, if I remember it correctly, you need a different ocx for for those versions.
In integrating the product with other Genesys products, I would give WFM at least a B. TCS and Blue Pumpkin are not even close.
Featurewise, I think WFM still beats its competition; however, in trying to make their product as flexible as they can, its GUI was left in preNeanderthal state. I would rate its userfriendliness somewhere bellow a hungry bear in the winter. I was told that it is designed for a call center planner in mind; however, grouping of functions is not intuitive, terminology is not consistent, and it is limited to Windows.
The scheduling algorithm is rather nice. I found it to be rather flexible, and even creative. Whereas Blue Pumpkin strains to fulfill scheduling integrity requests and forecastased manpower estimation, Workforce Manager aims at learning recursively from previously forecasted call volume and manpower by using adherence functionality and comparing the forecasted information to the actual data. WFM is a very nice tool, part solution if I might say, which greatly benefits the user in a long erm. The problem, however, is getting to that long erm, because most of the users I know would give up probably two days into implementation and go with TCS due to its simplicity or Blue Pumkin, due to its 0day startup requirement.