Well, after a bit of searching, I did find the command to set the character controller displacement during movement to allow for free flight (phy set character controller displacement 3, 0.0,0.0, 0.0).
Still, this only really helps if I'm moving forward or backwards, but sliding left & right without rotating the character controller is my next task, and I've a feeling that it's going to require some interesting angle/vector calculations to achieve.
In the meantime, I'm also considering using Sparky's collision (which I have just now begun to use & enjoy - Thanks, Sparky!) for the main character movement/collision, and yet still employing Dark Physics for dynamic objects, etc. Should be an interesting mixture.
In case anyone is wondering, I'm looking at re-creating (or at least attempting to!) a remake of Interplay's Descent...
As always, any comments or suggestions are well appreciated. If I get a reasonably workable demo up & going, I'll be happy to post it up here for all to enjoy.
When this baby hits 88mph, you're gonna see some serious sh..!