I don't go looking for pipes with fills, and I appreciate it when I buy a pipe if there aren't any, or if they are completely concealed so I don't every know about them, usually by some aspect of the finish. However, over the years, I have bought a few pipes (maybe a few more than a few) that have visible fills. Some examples are the old Benton pipes sold and stamped as Iwan Ries house pipes, and others are the unfinished Savinelli pipes, some of which have visible fills. In all cases, these pipe have been fine smokers. The IR pipes are made from excellent Algerian briar, and the Sav pipes smoke as well as any of their up-market fine finish pipes. I have never had a fill-related burnout, and none of the fills has ever popped out nor become so discolored as to offend. I don't dispute avoiding fills. I do. But unless your are particularly meticulous about fills, I don't think it is ever a deal breaker, as long as the quality of the smoking is good and the price takes the fills into account. I don't think it is an apology to say a fill or two can give a pipe a little character and personality. You may be as likely to have a flaw in a pipe without fills, or visible fills.