Older thread but thought this might be of interest to the OP. I just finished a waterslide decal (Custom Luthier Supply) on the Warmoth roasted maple neck for a project I'm putting together. I am not finishing the neck but wanted to clear the decal. After taping off to expose just the peghead face, I used a couple light coats of Behlen sealer, light dry sanded, applied the decal and then cleared about 6 coats of Behlen nitro. Wet sanded to 3000 and polished with a dry papertowel. This gave me the desired result. Somewhat glossy but not substantially different than the rest of the neck. Me happy, not sure it is what you are looking for.
Note...the CLS decals are thinner than an OJ alibi, but very nice if you can get them on without wadding them into a spit-ball or ripping them in half.