If a cock is squeaky clean, whether it's circumcised or not makes no difference to me. In some cases, I've found men who aren't circumcised go the extra mile when it comes to cleanliness.
I prefer CLEAN regardless of circumcised or uncut.
A musty circumcised peen would never take place above a pristinely washed anteater. Playfully (but seriously lol) telling guys something along the lines of "wash as thoroughly as you want me to suck/lick it" ... generally does the trick .