I have one of the posts in the Lancair Pics thread.
I quote from the Great Planes
PR on this plane: "excels at many aerobatic maneuvers including loops, spins, snap rolls, and inverted flight". The Lancair is a beautiful and sleek plane that just cries out to be flown at the limits. I believe the construction of this plane is not up to the afore-mentioned statement without substantial modification.
I also wonder if the ease of overpowering this plane also contributes. A 90 two stroke or 100 four stroke exceeds the manufacturers limits which it appears should be considered a hard limit.