I use the loop (mickey mouse ears) mainly for two reasons. One, larger conductors are harder to get bent around and go into a lug straight on after cutting to length, if they are to go straight in from opening to lug. Second, larger conductors in my opinion ( if not properly torqued) tend to become loose at the lug easier than smaller conductors and with loops there might be a chance to save wire, time and of course cost, when you need to cut back on the conductor after it became damaged from the heat at the lug.
Just my idea.
Dan
