You might combine a wiremold product with a built up baseboard above and below the W/M and they will forever be asking you where did you get that? See if White River Hardwoods has a web site with profiles of stock trim.
I see that you said "residential", Dave, so this doesn't really apply to this case, but..Couldn't that stuff cause some trouble where ADA compliance was required?
[This message has been edited by electure (edited 10-15-2006).]