I hate it...proper hate it.
I can do it, but as I can't aim while moving anyway, being in 3d doesn't help
I used it a lot in Q3 long ago, to reduce splash damage and to pull off the odd rocket jump, but this is supposed to be earth with soldiers kitted out in 60 kg of additional equipment... jumping round every corner makes me mad, where as [ramirez] "being a sneaky bastard, SAH " [/ramirez] is my middle name... and is a clear and present danger