Hi there!
I received the Switchdriver for Christmas, and used it a little.
It comes with two lithium batteries, and a junk charger. The paperwork says that you shouldn't leave the batteries on the charger after they're full because it could overcharge them. I didn't think that lithium battery circuitry allowed you to do that, but I won't test it. Other battery tools I've got have chargers that sit on a bench, and you slide batteries into or onto them. On this one, you slide the charger onto the battery.
The switching mechanism is the red trigger. Pull the trigger and rotate the turret. I think the idea is to have the pilot bit on one chuck and the screw driver bit in the other. That's how I tried it, anyway.
They are 1/4" hex collets, and are quick release. They seem okay.
There is a "torque" adjustment on the bottom of the tool and a two-speed switch on top. I tried turning the torque adjustment but didn't notice much.
The big miss with the tool, to me, is that it doesn't have a clutch. So, when driving screws, you can't set the clutch to a specific torque and drive until the clutch slips. My Bosch 3/8" lithium drill has a clutch and it works pretty well. I get pretty consistent drives with it.
The Switchdriver was a gift and I'll probably use it but I'm not yet sure how. I don't keep 1/4" hex shank drill bits around, and it's not my go-to choice for driving fasteners since it's missing the clutch I like in my Bosch.