No, doubt there is more than one way to skin a cat. You and I have the knowledge to look at the switches rated amps and the circuit, to make sure the switch doesn't fry, but for the novice that may be reading this I try to give the "safe" way that has the least chance of frying something. I have run switches on the power wire to the ecu, low current, so a direct switch. Alot of it depends on the circuit and how hidden the switch. I stole a button out of a 1980's vcr and used it for a push button starter, it definately needed a relay. I come from the school of thought that says "Measure twice, cut once" so I tend to put relays in even when they aren't neccesarily needed, so "when in doubt, don't leave the relay out"