I love this shoe, it is incredibly versatile. The 6mm drop is perfect for a more natural feel with out making you feel like you are completely exposed to sharp rocks and terrain. The grip from the sole is better than I expected ( I have Speedcross 3's for comparison) and the only time my Speedcrosses really shine over the mantra is when the dirt is moist and loose... other than that... the Mantra is plenty grippy (and def more so on hard surface such as rocks/pavement vs the Speedcross 3)
The shoe can be used for cross-train/crossfit as well. It's not the best but there are far worse choices out there. It's the only shoe I am using on my deployment for running, lifting and crossfit and I don't feel like I am missing anything.
The speedlace system has been flawless and I love having a nice tight and streamlined shoe while I am running with no laces flopping around. Did I mention the little pocket you tuck the laces in makes a great place to stash items like a $20 or a key for home?
:) yeah, I love this shoe... I'll will get another pair when these wear out.