Our thanks to Brent Evans for pointing us towards this tasty cocktail which he describes as "Scotch whisky blended with fresh oranges, lemons and a whisper...
Simon - can you expand on your reasoning for frequently splitting your orgeat with plain simple syrup? It seems counterintuitive. I honestly can't taste the orgeat in such small quantities. Why not just have 10ml of orgeat since it's essentially flavoured simple? Seems unlikely to bully anything.
I was led by Trader Vic's original recipe which calls for orgeat and "rock candy syrup" (rich 2:1 sugar syrup). I've added his recipe above for reference.