Pleased to report that the Hot Logic worked great for cooking as well as warming meals on the road. I am now a big fan of this product! Made all kinds of rice, chicken, tortillas backpacking meals and more with this thing. The great thing about it is, its "free" meaning the only thing you're spending is a negligible amount of wear on your battery and alternator. For a 15 day trip for 2 people, we only used a SINGLE 8oz canister of isobutane with my MSR stove. We ate out only a handful of times so that's a lot of meals!
We settled into a routine of prepping lunch in the 6 cup pyrex at the same time as breakfast, and in some cases, dinner at the same time as lunch. Then just before heading off, we'd plug in the Hot Logic, zip it closed, and drive for 2-3-4 hours. The instant we stopped, there would be a hot meal waiting for us. We even cooked lunch for 4 adults at one point in the 6 cup pyrex container! The only issue I had was a small amount of spilling from the plastic lid, but that cleaned up quite well.
Chicken came out great, almost exactly like sous vide since you're cooking in a nearly sealed container at very low heat for a long time. Nothing gets burned or overcooked. Tortillas get warmed to the right temperature. This will be our go-to cooker on all trips going forward!