Hello,
I'm putting ceramic tile in a bath.
The bathtub is one of the older styles with a contoured profile.
I'm going to be taking the old plywood subfloor off and putting on a new one.
I have a pattern already made up so I can route the profile on the plywood.

Before I destroy a $7.50 sheet of Durarock by trying it, is there any reason I can't use a cheap straight router bit to route the profile?
Other than the dust & destroying the bit that is.