Is the ThinkBook 14 2-in-1 G4 IML good for note-taking?

Yes. The 360-degree hinge folds flat into tablet mode and the touchscreen takes pen input, so you can write and sketch directly. Check whether a pen ships with the model you pick.

Can it handle gaming or video editing?

It uses Intel Core Ultra processors with integrated graphics, so it handles office work, browsing and light photo editing well. Heavy gaming and 3D rendering need a laptop with a dedicated GPU.

How does it compare with the non-convertible ThinkBook 14?

The 2-in-1 adds the touchscreen and 360-degree hinge for tablet and tent use. In return it is a little heavier and costs more than the standard clamshell.

Does it come with a pen?

Pen support is built into the touchscreen, but a pen is not guaranteed in the box. Confirm with the seller before buying if handwriting matters to you.