I'm not sure if it sticks in your throat. I do know that when I'm giving oral I produce a lot of saliva & phlem...which helps with lubrication & swallowing.

And do what's comfortable & leave room to explore. Your in control of how much you wanto do. The penis is not the only place...some men like their prostate or scrotum done as well. Might is well mention the back door too.
PS....most men think they're well endowed. Lol.