You know, it never occured to me to try and use it without - I just tossed it

However, I doubt it would have been useful stemless for me - my muscles snugged so tight around it that sometimes it would be difficult to find the stem... I'd hate to be messing around (LOL, literally) trying to find/grab the cup with no stem at all...

CA... hadn't occured to me to email the supplier and/or the manufacturor... I'll do that anyways I think. Thanks for the suggestion