I experimented with the finishing last night. And again, I have some things that have worked better than others. I tried three different things. Here's the scoop:
1) Spray a coat of lacquer onto wood and apply decal to tacky coat.
Ick, no! Turns out that both the ink from the laser printer and the silver paint pen dissolve quite nicely in tacky (or even wet) lacquer. In short, this is not a good idea. After all the hard work that you'll put into your logo, you'll ruin it all once the lacquer hits the ink. Time to think of something else.
Digging around in my wifes craft closet, I spot a can of photo mount and some modge podge. Paydirt!
2) Use spraymount (a 3M photomount) to attach decal and lacquer over that.
I sprayed a good layer of adhesive on the ink side of the decal, wait a few seconds and slap it on to the scrap wood. I let it set while I worked with the Modge Podge (discussed below) and then sprayed an abundant coat of lacquer on top of that. If I were really finishing, I'd build up the coat more slowly, but this is just a test. The results aren't bad. The lacquer did creep under the decal a little, and where it touched the ink it ran just a little. But, I don't like the way the decal looks. It looks suspended above the wood. It makes it look foggy.
3) Modge Podge decal and lacquer over that.
So, not too surprisingly, Modge Podge worked the best. Considering that Brian suggests (or at least has a photo of) the stuff in the material finish tutorial, it seems like this is a natural way to go. The logo gets glued to the wood with the Modge Podge. Let that cure up and sand it flat (which I didn't do in this test), and then hit it with a few coats of lacquer.
Here's the photo. Nearfield is the photomounted version, farfield is the modge podge version.