I like minimal shoes but wanted something that would be a bit more forgiving on training runs that include a mix of road and trail, and which might also provide a bit more support to failing form on longer runs. On first inspection these fit the application quite well - they retain a fairly precise feel underfoot but have a bit more support than the minimalist sense ultra, and initially I was quite happy with them and gave them a positive review.
After running about 100 miles in them I have now found a few things that disappoint:
1) I loved the locked in feel of the 'endofit' in the sense ultra when I tried it and, while these claim to have the same feature, I felt that in practice the neoprene sock is not as tight and snug in the Mantra.
2) Grip - the rubber that they have used seems to be a bit slippery on wet rock (compared to my other shoes which are mostly Inov-8s)
3) Lacing - the lacing uses very thin cord which causes sores on the top of my feet on longer runs. This has got worse over time as the padding in the tongue has relaxed. In addition the toggle thingy slips so you have to re-tension the laces every now and then.
4) Hot & sweaty: The sides of the shoe are almost solid and combined with the endofit sleeve I find that I get very sweaty feet.
5) The fabric over the toes has started to go into holes where it creases - not great for 100 miles.
Now wishing that I had gone for the N1's or perhaps a pair of Inov-8 Trailrocs :(