Yep...router all the way
I've used lots of formica in custom audio instals with weird shapes and such. Harbor freight sells a decent little 1/4" router for 20-30 bucks, then get a decent flush bit, do the sides first, then the top piece.
Glue it then router it....
Use a rubber roller and the right glue (let it get tacky before you stick the formica).....but you probably know that part
On places the router doesn't fit I'll use a metal jig saw blade with the formica real close to a table edge and go real slow to keep it from chipping.