I got this mascara as a part of my 500point gift at Sephora, and honestly wasn't too excited to try it, I was perfectly happy with my CG Lashblast. Anyways, as fate would have it, I was traveling when I got the Laura Mercier sample-pack and I had forgot my CG Lashblast at home! So I gave it a go. And wow. This stuff is legit. It gives beautiful volume, with a bit of length. Lashes are separated, but not spidery. My favorite thing about this is that, while it is buildable, you get incredible results with very little product. After three or four swipes over my lashes they look like 10 swipes of the CG mascara, only neater!! It can get clumpy as it builds up, but it's really easy to comb out with a lash comb or clean spoolie. I've never been a believer in high end mascara but this is really great, and I will absolutely buy a full size. As far as smudging goes, I have dry eyelids so it wasn't a huge issue. I did get a bit of smudging under my eyes, but it's fairly easy to control with some Painterly paint pot or eyeshadow primer.
Only con is that the stopper came out on my deluxe sample size, so the wand got a little product build up on it. I got the stopper back in and everything, but it's still loose and I have to be gentle taking the wand out. As long as the full size doesn't do that I can see myself repurchasing this many times.