I have to admit I really didn't know much about Bogans when I posted my opinion which was a poor choice on my part. I now know that he was a stud in college but seems to have had an unremarkable career in the NBA so far. His career numbers aren't exactly impressive to me, 39% from the field and 35% from 3. His entire playoff experience of 10 games his numbers dipped even more. Maybe he just hasn't found his niche yet. Some ppl here have said he was signed to be a "defensive specialist". From what I've seen of him he doesn't seem to overwhelming in that area either.
As far as Hairston goes, just because he hasn't seen NBA action on a regular basis does not mean anything. Look at Von Wafer last year, he came in from the D leagues and gave the rockets a very solid backup wing. Now why couldn't Hairston do the same for the spurs? I think Popovich sometimes doesn't put enough faith in his young players, look what happened to George Hill last year. And it cost the spurs in the end, when Hill proved he belonged all along. I'd much rather invest in a young player with a high ceiling than settling for a journeyman scrub just because he has played 6 years in the league and seen the playoffs.