I've bought a few things (2 x Evolve top, 2 x discontinued v-neck t-shirt, 2 x revolve dress).
I've found that their clothing is quite nice, but very fluid - there's very little structure, so I've had issues with the shoulders sliding and the tops gaping (I have narrow shoulders, which probably doesn't help). I'm planning to install bra keeper straps, which should help with this. Sizing down might also have been a good choice, but I'm horrible about returns when online shopping.
The sizing is inconsistent between the same items (I ordered two of the evolve tops in a different fabric and colour, one is two inches shorter and narrower than the other, one of the t-shirts is a bit narrower than the other). The fabric is nice and as I'm making a conscious effort to purchase Canadian made clothing, they are a good option. Everything is cold water / hand wash and lay flat to dry, which can be a pain.
That being said, I do wear the revolve / evolve tops a lot, especially when I'm travelling.
They do have a 'seconds and defects' sale a few times per year (one was a few weeks ago), which may be a good option to try something out. My item was 40% off and had a small hole along the hem that I was able do close up in a few minutes.
If you are in Toronto, I think they have an actual studio where you can try things on.
If you have any specific questions, let me know.