I have been looking at some "Crotch Carry" options for summer deep concealment and I might pull the trigger on a Smart Carry. My question for those who use it. 1) Does it conceal well if you are just in shorts and a T-shirt? 2) Is it comfortable if you have a 9 to 5 basic desk job? 3) Is it comfortable if you are hiking or taking long distance walks? 4) Can you run or bike with it?