Yes, that is what I meant. When you go to engrave the pen put some masking around the barrel just like you would any other project.
The depth of the engrave is going to depend on the pen kit you are using and the size of the bushing.
Finishing the pen with a polish is a personal thing, but when I complete the turning I apply a finish to the wood and acrylic. I use the CA medium to seal the wood which gives a little shine and then I apply a polish and buff.
There are several methods and instructions on the finishing of pens all out on YouTube and various retailers have their videos. If you decide to engrave the pen, I finish and polish first, and then fill in the engrave with acrylic paint.
Have fun, enjoy and Happy Holidays…