I tested the last of my GenCon events on my favorite guinea pigs (volunteers) using the 2d20 Conan game system.  It worked beautifully and well.  There are definitely some streamlined features that make it flow a little better than Mutant Chronicles (especially if you forget the rules about Reach, which was an accident).  Both settings work out very well for the purposes of playing a fun and fast game that flows well and gives a good sense of heroic action.  Obligatory Arnold lines and hacking down of thousands of minions may, or may not, have happened.  But a good time was had by all.