Just a quick point Walt , if you have a beautiful piece of wood and you make a pen with it , you will want it to remain looking good for as long as possible . BLO will not protect the wood for very long and soon that beautiful pen will start to "Take on a Patina" (read that as "Look like crap") , Learn some sort of lasting finish , CA , Lacquer , Poly , Plexi , Enduro , some kind of actual finish . BLO , Friction polish and those types of finish work great on other turnings like bowls and boxes but pens are handled and the natural oils and dirt on peoples hands will cause them to wear quickly and the grain to fill with the grunge from handling .
CA finishes are the fastest and easiest to do but have taken on the reputation of being very hard to do (they are only hard to do if you make them that way) .
Lacquer is a good finish but takes time to fully cure , still it's worth the time for a lasting finish .
Poly works as well as lacquer but also takes time to fully cure .
Plexi-tone has a learning curve thats as bad as CA for most people .
Enduro works well but falls somewhere between all the others in time and ease of finishing .
Put a good finish on your pens , in the end you'll be glad you did .
PM me if you have any questions .