Well, this really isn't a BIAB issue, but I like it anyway. If you sit next to somebody who plays better than you, there's no doubt that you'll learn to sight read better if the better player can do it well. You will also play better than you would if you were playing the same music by yourself even if you were not sight reading. That's just the way it is.

Sight reading is important in a couple of groups that I play in. When I started, my wife said am a cpa who can't count. She was right, too. However, I've improved over the past 7 years and my mistakes are a lot less now. I think that you will play better if you sight read well because you will have more confidence, Just my 4 cents worth.

Stan

Cornet Curmudgeon