If you want to be a "Think outside the box" type of player fine thats ok, but to suggest that it will outperform tried and true setups is just ignorant.
Endgame rampage in XP is more about epeen then effectiveness, I can equip axe+ridill, ridill+joy , and well weaponskills will definetly be signifcantly higher on demons (700-1500 vs the 500-600 of ridll), your losing alot of damage on a hit to hit basis.
Has nothing to do with "Thinking outside the Box" , Its pure damage and efficency, a well-built 1hand ridill setup will out-damage every other combo *in general*(again, the standard disclaimer, various situations will change things, I make no absolutes) over several hours of XP.
I typically group with two other warriors, one does maneater/ridill, one does ridill/joy, I do ridill/tatami, I'm *always* at top of the parser.
(as a side note, its worth mentioning I have 271 sword skill, 278 soon as I can get a torque, if your not fully sword-build merited and everything, you probably are going to see lesser results).
So in summary, I'll say again, its situational, if your in a PT where you don't need shadows (because others do a good job with tanking and hate), then 1handed ridill is, in my extensive experience and opinion, the way to go. Drg and Drk subs work great for the combo.