Hi Mark,
It's great to get a kiwi designer on board! Thanks for your input!
I like the simplicity of your thoughts, although I feel your design needs a bit more style, especially in the font.
Are you able to give some thought around the possibility of using lower case and perhaps incorporating the tail of the "g" into the design somehow? what about italics also? Maybe a stylised "s" could be used for good effect?
I want the final logo to reflect the quality and reliability of the product.