As you probably know, E-6 FD is one of the best B&W developers out there, that's why Kodak formulated it this way. Ron told me, that unlike HQ the oxidation product of HQMS doesn't have developer properties, and this causes HQMS to give better sharpness than HQ.
The only issue with E-6 FD is, that it is a very very powerful developer, which would develop your B&W film to normal contrast within less than a minute. The way to handle this is dilution: E-6 FD working solution diluted 1+9 makes a very decent B&W developer. I typically use it at 26°C for 10-12 minutes, and this gives me at least normally developed negatives. I like the development at 26°C, since at summer time not even my cold water always comes out colder than that.
Since I have - I believe - already mentioned this at least once, you can consider this a formula in the public domain :-D