I'm building a 3 speed wheel for a friend's commuter bike. It'll be rim brake, no coaster here. I always use double butted spokes for myself, and recommend them to others, but I don't see too many internally geared hubs with double butted spokes. Do internal hubs put any more torque on a wheel than the standard freewheel/hub deraileur set ups? Are double butted spokes a bad idea for internal hubs?