I was wondering, have you thought about a stove that will work as both versions? It sounds like its just less holes in the Simmer version. If so, what about taping the holes for thumb-scew plugs or maybe a collar with teeth (think castle nut) that could be rotated in/out of position. That way you only need 1 for both jobs!
I have always been of the survivalist mindset, so I plan to have one of these on my bike during trips, unless carrying my MSR and one in my backpack for when the "Sh&% Hits the Fan". The websites like Zombie Hunters, would be another source of revenue!