Derek is spot on. Think of him much like we think of Thad.
1. He has a natural position (PG) and can give you minutes at SG (next to Lou.) That is being versatile, not being a tweener. Like Duncan is versatile at PF/C and not a tweener. Its a good thing.
2. He will be just scraping the surface on his potential this year. But like Thad, his length, smarts, character and willingness to play within himself will earn him minutes early. He will have some value in his 1st 2 years, but his true worth hopefully shows in 2+ years (by age 21.)
3. These same traits could allow him to develop faster than people think. Since he is somewhat of a natural with the ball in his hands and will not be asked to "run an offense" he could surprise us and pay instant dividends. Sort of like how Thad's touch and instincts around the hoop made him a nearly immediate impact player, even playing out of position.