Does the stylus end work on any touchscreen?

It is a rubber-tipped stylus, the kind that works on capacitive touchscreens such as phones and tablets. It is not an active pen, so it won't give pressure sensitivity or palm rejection.

It is a gel pen with a standard refill inside the barrel. The pen is built to be reused with a replacement gel refill rather than thrown away when the ink runs dry.

How does it compare with a plain gel pen?

You get the same smooth gel writing plus a stylus tip and a soft-touch, textured grip. The trade-off is a slightly bulkier body than a simple capped gel pen.

Is the grip comfortable for long writing?

The rubberized soft-touch coating covers the diamond-textured grip, which is designed to reduce slipping. Most people find it comfortable for notes and forms; heavy writers may still prefer a wider-barreled pen.

Can it be printed with a company logo?

It is sold as a promotional pen, so the barrel is the usual place for a logo or message. Ask the seller about imprint area and minimum order before ordering.