As a response to question posted in a previous post, Nabeel Prior, having used HWS before, had this to say about the use of HWS:
"…while it is capable of doing workflow it is a rather cumbersome tool to use. Couple that with the fact that it was announced as a deprecated feature in R2 (http://msdn.microsoft.com/en-us/library/aa559720.aspx), and you have something that just isn’t worth investing time in.
My view is that it would be much more beneficial to learn WF and use WF from BizTalk, as per http://blogs.msdn.com/pandrew/archive/2007/11/01/just-released-biztalk-server-2006-extensions-for-windows-workflow-foundation-sdk.aspx.
Even though ZTP was based on HWS, even it is moving to WF: http://blogs.msdn.com/daclark/archive/2007/06/15/provisioning-4-0-on-windows-workflow-foundation.aspx"
I would like to thank Nabeel for the brilliant response. You can check out Nabeel's blog here.