the reason the models are Binarized in the first place is that way you can unlock it and edited the mod. the reason why people lock the model is because we dont want you editing our models with out the permission of the designers we have rights to lock our models so you cant do what you want with them but just chance the textures of the model thats all..
would it be fair if you made a model and you put it up for people to download and take it and redesign it alittle and say they made the whole thing. thats why people can lock there stuff.