Thanks for the replies. I'm looking at this model range but dont see a switch that can be relocated:
http://www.jaycar.com.au/productView.asp?ID=MI5702
Unless I keep the inverter switch ON all the time and have a remote switch at the output and/or another at the input. The JayCar people advised not to have just one just at the input since it'll cause a spike when turning on and damage connected equipment [emoji53]