Befor you rout a cove into the topside of your Ariel or Commander make damn sure you are not creating a zipper that will separate your top from the bottom again!

338 has about 3/16" thickness near the seam with about 1/8" at the seam.
I urge you to drill some holes to measure actual thickness along the proposed track of your cove befor you take a router to it.

There is no doubt that an incised cove line with real gold leaf in it has way more class than any vinyl stripe.