As a smoker of bent pipes only, I don't let that possibility bother me. If I have to separate the two parts and clean them separately, I'm fine with that. As long as the draw and smoke is good, I'm good.
Most of very best smoking pipes that are bents and straights ALL pass a pipe cleaner. The only ones that do not are my full bents. Recently I got a dull bent Peterson XL23 rusticated apple. Of coarse due to its design theres no way it would pass a pipe cleaner--actually its more like a system pipe due to the design. That pipe after I sanded out the inner bowl and started breaking it in is turning oout to be one of the best pipes I currently own. Although I like my pipes to pass a cleaner but that isn't always a indicator of a good smoker. Also the biggest thing I can impart to ANY pipe smoker--PRICE--be a big or mid range does not or is not always an indicator of a great pipe.