One of the reasons for negative rake on a mitre saw is that it helps push down on the board during the cut. A high positive angle would tend to lift it and could be dangerous. Negative on a table saw will tend to lift the board but a 5* angle shouldn't make much difference. It's just something to be aware of while you are cutting. I would have to reference it to be sure but I think melamine and veneer cutting blades have zero or negative hook.
You can go to some of the blade manufacturer sites and look at the tables they have for what each of their blades are best at and the specs will sometimes include grind type and tooth angle. I think Forrest's site has a chart like that.
Someone I consider a master woodworker once told me that a master woodworker is not someone who never makes mistakes. He is someone who is able to cover them up so that no one can tell.