[Jon Stratis]

Personally, I would say no - R75 is very explicit. It's especially a no if you know ahead of time that the cylinders your using are breaking the rules. Accidental use (especially for very young teams, generally rookie or second year) may merit special considerations (so long as it can be made safe AND shown that it gives the team no competitive advantage), at the discretion of the LRI at your event, but then you could easily get a different ruling at your next event.

Your best bet is the Q&A... and once answered on there, you're stuck with that answer - and you'd better bet your LRI will have read your question and your answer. I know I go through them all, with special attention to ones made by teams at my events (I try to get an idea of what crazy stuff I can expect to see, and I want to make sure I know the proper rulings for what they're trying to do!).