Originally Posted by Blizzie

When I bought my first bike they let me take out and try a few bikes over and over as I was trying to see which was more comfortable. When I was doing that, they were outside watching how I ride and gave me suggestions on fit. I've also seen them go on test rides with customers and teaching them how to shift gears, etc. At no point were they pressuring me to buy anything and were really patience with all my questions and concerns.

I guess it really depends on your LBS. The OP should still give it a shot.