This is all good stuff, people, but I need to elaborate a bit here.
The ATSB says that 91% of all fatal accidents resulting from engine failure in a twin occur because of loss of control in asymmetric flight, not aircraft performance decay. Is this because twin drivers don't practice enough? How often would you shut one down in flight just to practice? Also, are there many non-IFR twin drivers out there? Would an IFR twin driver be checked asymmetrically during their annual renewal?
Keep it coming,
Walrus