Yeah, load-bearing. With gunite (concrete) exterior. I guess my point was more to the OPs situation, that a concrete house would be difficult to re-work. Which matched my experience with our house.
Yup, I noted in a separate comment that re-work (or any kind of maintenance, let alone mind-changing) with concrete is a significant con, at least beyond the slab.
I'm likely to use in-fill, as load-bearing just seems too much effort, too time-constrained in terms of dealing with random weather events, and too difficult to effect subsequent design changes.
I'm assuming the gunite mixture allows some breathing? I thought concrete mixes were typically avoided for this reason -- most people I've heard of that do these (I'm in AU) use a natural mix, mostly clay-based, IIRC.
Environmentally-focused / permaculture types tend to like concrete floor + strawbale. It solves a lot of heating / cooling problems, but naturally the benefits there depend on the climate you're in and local costs of materials.
Anyway, to your point. Strawbale housing comes in two broad forms -- infill or load-bearing. Infill was the most popular way of doing this a few years ago, but seems to have lost favour (I don't know why). Load-bearing is definitely more difficult to modify, and that may be the variety you've got experience with. Infill is where you build a (say) structural metal pre-fab shed on a slab, and then tie down bales to embedded threaded bar in the floors to make the walls - filling gaps at the top with looser material. Non-trivial to change your mind later, but at least can be done without affecting the roof / infrastructure.