OK Nevada, if you think the manufacturer meant for the shorts to be rolled you're getting more than soft.... your getting goofy!:p If they wanted them rolled don't you think they would make them rolled. Volleyball has more of an emphasis on this than basketball.
The USSF soccer leagues I worked in Indiana had very specific rules about this -- in fact they would not even allow "sleevies" on the shirts. The sleeves had to be down. Their rationale to the parents were two fold: (1.) The rules say the uniform must be worn as manufactured so that's what we do. (2.) You have 14 - 16 year old girls on the tream and often have 15-18 year old referees. They wouldn't allow anything that could be miscontrued by others for the protection of both the girls and the young male referees.