I run ORIs and no sway bars and they work great. I only do slow crawling, no high speed Desert racing so the heat fade is not an issue for me. When I was switching from leafs to links I was originally going to do coil overs, but when looking at only having to package the struts and not fit sway bars, and the expense of ORIs being cheaper than cool overs and sway bars (at least the options I was looking at) it was an easy decision. The other benefit to me was how easy it is to tune/adjust the ORIs myself compared to how hard I have heard it can be to get cool overs dialed in, with trying different combos of springs/spring rates, etc.
As for your skeptical suspension engineer friends, have any actually used them? For me, they hold up to their claims and I wouldn't swap them out.