Unless the creator of a mod has told you it can run with another mod, there's no reason why it would work. If they both use different files then it'll probably be ok though.
Viewing post in Can't use several mods at the same time
Thing is that the modding guide actually warns you about the possibility of several mods modifying the same file and gives a workaround so that said mods can play nice with each other. However said workaround is not working. That's why I consider it a bug, if I hadn't read the modding guide, I wouldn't have given it a second thought.
There is also the fact that both me and the author of "any race mod" can't use certain mods in conjunction on a windows 10, but he claims that he CAN on a windows 7.