"EV mode" with cold engine
Have checked this subject and it appears we are both right!
There are some design differences between the US version and the European/Japanese version, among them:
In the Euro/Japan model you can engage EV mode during the time frame from pressing START to engine firing (about 10-12 seconds) provided that the hybrid system temperature is not lower than 0 C (32 F). In the US model the lowest temperature to do this is 20 C (68 F)!
So, it's nothing to do with safety.
I wonder what version our friends in Canada get, can you engage EV mode in the morning when temp is between 0-20 C?
Giora.