There is much that is optional in codeigniter. However i would STRONGLY encourage you to not load or call models upper case first. Yes you can do it. And yes there are probably a few people who do it. However its absolutely the convention to use lower case first. All of the examples you are going to look at, all of the common tutorials, almost every example on this forum, on stackoverflow - its all going to be lower case first. So just use that convention.
