Are there alternatives to sinktop backsplashes and sidesplashes?
Seems like most vanities have somewhat of a rounded edge and a backsplash or sidesplash provides a nice clean place to caulk. A vanity seems to be a place where quite a bit of water can wind up on the counter, so I think it's easier to keep clean if you have a splash. What about some ceramic tile? You could put them right on the sheetrock. As for having a hard time finding a backplash, have you contacted the manufacturer? I bought an American Standard vanity top from Lowe's and I had to call A.S. myself to order the side splash.