If I can be so presumptuous as to quote and answer myself - this is exactly how it works. According to rule 3N(4)(a), options must be consolidated at the same ratio as the heads, and the exercise price adjusted in inverse proportion to that ratio. I.e. as per my example.
Hope that helps anyone else who may have not been through the process before.
MPJ Price at posting:
0.7¢ Sentiment: Buy Disclosure: Held