On many forums this has been a controversial subject for quite some time. I look at it a couple of ways. Do you buy insurance? Why? Just in case you have an accident you are covered if someone is injured. Would you follow the advise of someone that is an expert and knowledgeable of thinks you are not?
Mac the Fire Guy gives lectures all over the country and has credentials to show he is knowledgable. I am not a fire fighter but Mac does teach civilian fire fighters about fighting RV fires.
Here is Mac's web site and his Fire Facts page. Check out item 8.
One of the things he teaches in his Fire classes at rallys is check your emergency exits. I took his course at a LOW (Life On Wheels) and he had everyone check their emergency exit. Out of about 16 RV's 3 exits would not open and you can't reach the ground from the outside.
BC
Our Fridge in Aug will have been running since Aug 2009 thats 2 years. We elect to keep in running and its always hooked to the electric and when traveling it will auto switch to propane. We are in Colorado and this is only the 2nd RV park we have ever had to use 30 amp service so I will run the Fridge on Propane. Our 5th wheel has whats called energy management system were as it will automatically turn off appliances to keep from triping a breaker. So thats the reason for running the Fridge on propane. Thats correct also if your running a Gas engine in hte Truck you should turn off the propane when re-filling... But I also think its more danger in people smoking when re-fueling....... Happy Trails....