I played a bit last time. It was kinda like Rising Storm style. Felt less polished, to be honest. Rising Storm also suffers from the "died from someone you never knew was alive" syndrome, but I dunno, Rising Storm just feels more complete.
I did enjoy my hour or so with Verdun, but I'm not sure I'd recommend it, really. I'd play it, yes, but I'm not leaning towards the "recommend" side, if you know what I mean.
I think part of the problem is that games like Insurgency and Day of Infamy are very clear in their objectives. Verdun is less clear. The mechanics aren't entirely straight forward, and you spend so much time ducking into holes that it's hard to get a feel for the game before just getting frustrated because someone popped you from god knows where a hundred times. I think that's the big drawback, and it applies kinda to Rising Storm too. It's really easy to get frustrated with the game before you ever learn how it's really played because you can die so quickly.