Do not drink the sus with protein, the protein messes with the esters and results in nil absorption, if you use creatine and an grapefruit juice I think you will be happy with the results, especially if you use the controversial method of administration currently being utilised by the pros i.e. turkey baster up the back door.
Post your results (and picks if you go for the second method of administration).
No regards
Ever
Lord of the pit