ok, so on the weekend I tried one rack of ribs without mustard, the way I normaly make them, and one rack using mustard to hold the rub on. I have to say the dog got a good feed sunday nigh. the ribs with the mustard were just off, can't explain it but they had a flavor that was just wrong.. so for me no mustard.
And just a side note I do love mustard on hotdogs, corndogs, hamburgers, ect and I even do a lot of cooking with it also. just don't like it with smoke, takes a way to much for the natural flavor.
Steve