I don\'t knwo about the Sandalwood smell, as I have the unscented, but I have had no problem mixing TE with the SPMO in small quantities. I don\'t imagine larger quantities would change the results much. You will see some \"swirlies\" in the mixture, but that\'s just the oil trying to be dissolved in the alcohol, or vice versa.
I have CK Escape and Eternity, and I get much more than 2 hrs out of them at a time. Maybe 2 or 3 sprays gets me at least 5 hours.