R8893 this is very interesting – obviously there is no "something for nothing" – each approach (3-line vs. electronic control) has its advantages and limitations.

Is it practical, on a non-aerobatic scale model that you do not plan to loop, to use non insulated lines (both)?
In such a case using maybe a safety switch in the handle, that would only initiate the system prior to takeoff when you are holding the handle and thus ensuring no contact between the lines?
Has anyone tried this?

Also, reading what you have written about your scale models leads me to another question – what is considered a "sensible" size limit for a CL scale model?
For example – would Nick Ziroli's 101" span B-25 be practical and if so, using what engines and line lengths?
Is there some rule-of-thumb on model wingspan, weight, engine capacity, and line lengths for 2 or 3 line systems?