I recently had IAP member Stan Cook (member name mrcook4570), who runs the Engraving Cave, laser engrave a couple of TruStone pens for my client. They came out great. He colorfilled them in gold, which looks superb with the gold matrix in the TruStone. He has lots of fonts. For a wedding pen a Monotype Corsiva would look nice, or Edwardian Script if you're looking for more flowing. If you're just doing one or two lines, he prefers the pen fully assembled. Nothing need be done over the colorfill. He had a one day turn-around time for my 2 pens and prices were reasonable.
He was recommended by several here on IAP, and I concur after my one transaction. I'll be using him again.