Also worth considering the possible consequences of having a "suicide" lead lying around if it were to be accidentally plugged in. 
Precisely, and with sensible use the plug in genny works well. ie, mains swich off, lead plugged in, start genny. 
I think you have missed the point - If an adult, or even a young child were to pull 'that' plug, the consequences may be unthinkable.
I do it myself, I have a bloody great big Jenny, running a 240v feed. I also (if the outage is more than a few hours) run another lead to my neighbours house.
Not sure on the power output, but it's a welder/generator, so assuming the regulators are OK, I should be looking at near 4kvA
I strongly suggest anyone looking at this as a temporary solution.....
Look at what you have plugged in to the mains - Write a list for each room. When the power fails, go and switch off EVERYTHING which is not IMPERATIVE.
Start-up power will just kill the generator.