I can't answer your question directly, but... I was just in my local JAF's (with another QB member, yah!) looking at interfacings and such. Found a great little gizmo on the end of the rack with all their various interfacings made up as swatches (about 5" square) with fabrics on both sides. Bolt labels holding them onto various rings clipped together. A great way to get a true feel for what specific product you are looking for based on results.
Granted I'm a very tactile person in general but I think that is a great resource for those of us not intimately familiar with linings; interfacings; etc. to get a better handle on what the end product may feel/function like. Just a thought.