I just finished holidays and literally only had time to tinker with the stove/potstand and not try it yet. I can't see it being less efficient compared to my home made gram cracker and coat hanger wire potstand. This Esbit stove/potstand is a lot more sturdier than my home creation and is on-par with weight so it will get the nod.
Haven't got your mail yet though some things I have purchased from the U.S. recently have taken 3-3.5 weeks to get here. I bet it's the USPS but the Aussie Post that is to blame. Aussie post has a nickname here in Oz……Snailmail.