Is it a good idea to use the buckets for both beer and wine? One of the LHBS i visit tells me to use separate, as they said the yeasts used in beer will kill the yeasts used for wine and vise versa....and my not work out if using the same buckets. I found it weird thinking that it wouldn't matter with a good cleaning, but hey, what do i know right? lol. I just nodded, agreed and walked away.....So any truth to what they told me? or were they just trying to get me to get another bucket? (which i didn't)...