I'd think that Solaris is the one place that for sure the Hoff/Corrosive models would be used.
Agreed. Using components to boost performance, even short-term, isn't new. The Luftwaffe used nitrous oxide boost for high-level, fast aircraft. N2O feeds oxygen into combustion engines and results in boosted power, with a possible risk of structural damage due to increased pressure, which has cracked cylinders, damaged crankshafts and pistons.
What happens is the pilot weighs the benefits against the risks. If doubling HS capacity, even limited to the engine, may significantly increase completing a successful, lucrative mission, expensive repairs might be worth it. I could see mercs keeping Hoff-DHS in storage, ready to use for that single raid where they might score big and afford the time and expenses for subsequent repairs.
You just have the weigh the costs vs benefits.
I'd say the BTU should have more "questionable" prototype equipment that sensible units would avoid like the plague while other, less well-supplied units may embrace.
A note on cheap equipment: I used to own a pre-WW1 Moisin-Nagant battle rifle that I would shoot in local competitions. I would use Norma 7.62 x 54 mm ammo and did very well. One of my friends gave me a can of Egyptian-made bullets so I went down to the range and fired a few...I shot at the 50m target several times but could not find a bullet hole. After about a dozen shots I finally hit the target. The Egyptian-made bullets couldn't achieve a 1 meter group, which explains why so many 3rd world troops using AKs don't bother with using sights, preferring the "spray and pray" method of firing. Aiming was just a waste of time.
Using the above example, I added a market of sheer crap weapons and ammo to the market of the games I ran, for the units and players who were on a serious shoestring budget...or didn't know better.