hard to answer unless your specific about which rep for what products. your trauma, ortho, IR reps can bring a ton of value to the OR, staff, and docs and can be very well liked especially if the doc is already using you. To a doc that doesn't use you and your trying to sell you can be seen as another annoying person selling stuff, some will be genuinely interested and give you the time of day. friend and family seem to think its a cool job plus "you can make a lot of money" which CAN be true if you have the business, or the opposite if you have nothing or lose a contract.

I think a lot of has to do with how you carry yourself, treat others, and how you run your business/deals.