At the same time some places DO just try to put you on the bike they have in stock...
case and point I am looking for a new bike and was out testing last weekend, I tried a couple in one shop and one of the models I was interested in ('05 fuji Team) they only had in a 58cm (i'm 6'3") so I was pretty sure it would be too small, but they insisted I try it out. Upon returning I said I liked it and if they had a 61cm I would like to try it. I spend 10 minutes listening to promises of a stem change....before having to leave...