The top two panels actually look really good, really crisp. By comparison the bottom two panels look slightly fuzzy.
I was writing about it in the Random Crap thread, but I have figured out the biggest problem with using the Vector art. That basically keeps my overall work time roughly the same, so I'm seriously - meaning very, very likely, making the switch.
Here's the idea. Artstudio has a powerful suite of image manipulation tools, which made adjusting sketches a breeze. I can do my sketches there, import them to Sketch Club, ink and color there, and send the images to Strip Designer where I letter the comics. Bounce it back to Artstudio one more time to resize the page for publishing.