Has anybody experienced the bad side of the Pump

Hi ya, if I remember correctly, before I got my pump I found a link on here (on the pump thread) and it was written by a Dr at a hospital in London who said that something like 3% of people who try a pump go back to MDI? I'm struggling to remember why though...although there was something about teens not wanting a pump showing in the summer so they would go back to MDI in the summer months and then back to the pump when it was colder and they could cover up! Sorry, not much help but so far I haven't found anything that would make me go back............does your clinic/hospital let you try it with saline first? that could give you an idea of pros/cons