From my experiences, I found that straight cigar tobacco, even from really good/smooth cigars, is pretty rough when smoked straight in a pipe.
If you were to mix it with pipe tobacco, now, that's a different matter. That I found to be tolerable, although not very interesting or what one might expect.
If it would otherwise be a total loss, I'd experiment; nothing to lose, after all.
__________________ "Man's mind is his basic tool of survival. Life is given to him, survival is not." -John Galt