I know they're for aluminum, but they can be used for wood too, right?

I need to get something for area clearing pockets in and around 3D carvings that doesn't leave circle marks..

I'm thinking that this might be the hot ticket.. I guess I would just use them the same way as a regular spiral bit but increase the step over to account for the radiused edge, right?..

What about feeds and speeds? Same as similar sized spirals? How about longevity? Same as their wood counterparts?

After using it in wood, I could still use it for aluminum and vis versa?