The bicycle part could be problematic. I have had a PM67R for 12+ years, and never upgraded the case. It has taken multiple moves across the U.S. with zero issues to the horn. It is a very strong case, however, I don't know if I would trust it for biking around, where there is a chance of falling. While there isn't much that could protect a sax from falling from height at 15-20 mph, I'd feel safer with a very nice hard case - maybe BAM or Walt Johnson. It would be less comfortable, but worth the protection.