Ok, this is the first time I hear of a half shuffle - the history behind it makes a lot of sense.No, that's a "half shuffle". Do you know the origins of that?
Back in the 1950's Little Richard took Charles Connor to the train station and said "I want my music to sound like that" and then the straight 8th Rock & Roll groove was born. (I interviewed him a few years back for a magazine and that's the words from his mouth...it's on YouTube... http://www.youtube.com/watch?v=vDlLb66b7Ao
In order to adapt, drummers back in those days who had been playing largely swing had to learn to straighten things out. In the interim that weird lopey in between "half shuffle" was born. It's kinda funny, how black musicians were straightening their hair and white musicians were straightening their groove. Coincidence?
Now if you wanna get deep into shuffle strangeness you gotta look at the "flat tire" or "stumble" which is the "&" being pushed across all 4 beats. Protip: If you're gonna try that, don't start it on the "&" of the previous 4 because you're gonna mess yourself all up but rather go straight off the downbeat of 1.