The upside with Solarez is you can dip it (indoors, so no UV light), and then cure it in the sun, or with a UV nail light. With the nail light it cures in three minutes, ready to paint, if you're using it as a sealer, or to fish fresh out of the nail light bos.
As Jdeee said, it is not as glossy as other topcoats, but it is fine for me.
It is thicker than urethanes, so one dip coat is all you need.
Since it is thicker, it is also heavier, so I typically use it for big surface baits that are very buoyant anyway. I don't use it on small cranks, like square bills, where the extra weight might affect the action.
It is hard and strong, so it really protects lures.
I was given a bunch of older Poe's deep divers that had their bills installed not square to the crosswise axis of the baits. and asked to fix the bills, make them suspend/slow rise, and repaint them for my friend. I heated the bills, twisted them until they were square to the baits, reweighted them to make them slow rise, and then dipped them in Solarez, including the bills, because I wanted the resin to reinforce the heated, twisted bills.
He is still fishing them, and the bills are holding up just fine.
If you dip, do it inside, over the container with doors closed and windows covered, or the drips will begin curing as they fall back into the container, and you'll wind up with a bunch of boogers in your resin. Been there, done that. I had to strain it through mesh to get them out.
Like Musky Glenn said, it is another useful tool, but it is not the magic bullet.