It seems to go well in Austin with them being at the top of the Western Conference with a 13-6 record.
What's weird is how little interaction there has been this year between Spurs and their G-league team. 4 Spurs players (Cissoko, Minix, Duke and Ingram) have played in Austin and with Spurs. These 4 players have only played garbage time with Spurs.
I'm not pointing that to trash Spurs. You can't blame Spurs to have drafted with Castle a player too good to need some development in G-league. You can't blame Spurs to have been healthy enough to no need their 15th to 18th players to fill a rotation. You even can't really blame Spurs to have traded the 8th pick given that this trade helped them getting Fox.
It is just strange to think that the whole G league ecosystem with assignments and two ways contracts has been basically useless this year to a rebuilding team like Spurs.