I bought these as a training aid, to get me into a zero drop feel, for the Mizuno Evo Levitas.
They work really well. You won't be running for hours in them. The longest run I've taken them on has been 14K.
The lack of lacing isn't a big issue, the velcro works well enough.
I did find the fit tight for my regular size, that isn't a problem if you're only going to wear them for under an hour.
Over all a good training aid shoe. Nice for transitioning from higher H-T ramp shoes to zero drop.