Sarge, I like a bit of crunchy sweet sugar burnt ends! I used the Sweet Baby Rays Honey, but the pure cane "sugar in the raw" I think did the trick, plus you cant go wrong with "Slap ya Mama"!
By the way, I used one chunk of the CS Hickory and it did the job, nice touch, not overly smoked. But I think the mustard acts a bit of a barrier for the smoke to penetrate.
I recall last time I just put my rub, without the mustard, and for sure the smoke was deeper.