Lars,
I would suggest (on any plane) you use at least a dual pole switch! Most radio systems are supplied with a cheap single pole light duty switch, if the single pole contact fails your plane is re-kitted! Both JR and Futaba (others as well) now make excellent HD multi-pole switches that are designed for todays higher current systems. If you opened up one of the stock system switches and looked at how they are made you would never use one again

Todd