lorax - 6:12 pm on Jul 2, 2012 (gmt 0)
I think you're spot on. Filters used in a product search should be used for the default settings in the options for the product selected in the search results.
I think the value of details like this are highly underrated. Most eComm store owners are likely more focused on the slipping economy and have no real way to measure the value of implementing this feature.