Ah, the QM. Well, that one I
do know about. If it was last night, you're very likely to have come across a regular steward who will probably remember you so you're probably going to have trouble getting back in for club nights, should you ever want to.
What
should have happened is the duty board member should have been called to the door to take your details for the ban list and inform you of the details of your ban. It is very rare for the stewards to take it upon themselves to permanently ban a non-member, unless they are being extremely violent, which I can't imagine you were.
I wouldn't imagine you'll have any problems going in during the day, since no one (other than the steward) was involved and you weren't added to the ban list properly.
It really bugs me that the stewards sometimes ban folk without doing it properly (involving duty board and logging it on the ban list).
If you are concerned about going in during the day, might be worth having a chat with the president (
ally.h on here)
This too, but definitely worth chatting to Ally first.