Thanks Matt Del Fiacco for the time and effort to review our product. It can be found on Matt's site here.
Olan Sudduth used his cooler bag for the first time and posted his review here.
I typically mash in converted cooler MLTs because I often make batches too large to fit the full volume in my kettle, though I absolutely see the value in BIAB and find myself utilizing the method on smaller batches with absolutely no ill-effects.
When using a fabric filter and the full volume of mash water without sparging, the gravity is set when the mash is complete - unless adjusting for volume in the kettle or the fermenter - it is never diluted. In addition the pH is fixed in both the mash tun and the kettle. The entire sparge process can be eliminated, saving time, effort, equipment and energy expense. The use of one kettle, one burner, and one bag with no mash out produces comparable results to sparging.