Custom Player Model Online

Now this is probably an extremely noob-ish question but it is one I really need to know.

If I’m using a custom Player Model that I downloaded, and I join an online game, will I show up as that model or will there be some error, or, god forbid, I appear as the Kliener model.

I just gotta know for sure so I don’t get mistaken for a mingebag.

P.S. I repeat again this is probably the dumbest question you might find this week, but please go easy on it. I’m still very new to the online gaming since I just got the high speed internet a VERY short while ago.

Kliener model unless they have the same model already on the server (unlikely)

Thanx dude.