Is this a real hammer drill or just a drill with a hammer switch?

It has a genuine hammer mode with a ratcheting chuck, so it drills brick and light block. It is not a rotary hammer and will struggle with dense concrete.

Does it use the same batteries as other Milwaukee M18 tools?

Yes. It runs on any M18 18-volt pack, so it shares batteries and chargers with the rest of the M18 line.

How does it compare with Milwaukee's high-torque hammer drill?

This one is shorter and lighter for overhead and one-handed work. The high-torque model drills larger holes faster but is bulkier and heavier.

What comes in the kit?

The kit includes the drill, one or more M18 batteries, a charger and a carrying case. Check the listing for the exact battery count and capacity.

Can it drive screws as well as drill?

Yes. The clutch and two-speed gearbox make it a capable driver, though it is heavier than a dedicated compact driver.

Is it worth it over a cheaper 18-volt hammer drill?

If you already own M18 batteries, the brushless motor and build quality justify it for regular trade use. Occasional DIY users may not need the extra durability.