Bill, it is indeed possible to make a pan sensitive emulsion with this dye, but you must remember that it re-equillibrates in the melted emulsion and in the coating as it keeps (although this is very slow). So, what you get is a changing emulsion.

Remember that J aggregation depends on Iodide content and thus it is possible to get red and green by using an Ag/Br/I and Ag/Br mix provided that you can get them up to comparable speeds and curve shapes kinda match.