Actually there was no sports 1140 before Napear came to KHTK. 1140 was a longtime country station.
Grant came over in 1994 when the Kings moved to KHTK from KFBK. Grant, G-Man and NFL Hall of Famer Jack Youngblood moved to KHTK and created Sportsline. Youngblood left to Orlando and G-man had to drop something since he was the TV voice of the Kings at that time, The radio show, pit reporter for ABC/ESPN's coverage of the C.A.R.T series, and the voice of several race tracks in the area(His son Boby does the same as well). G-Man was exausted.
As I just said during the early to mid-90's The Kings brass decided to switch Grant and G-man for a few years.
As said before its about taste. But I will say if you ask his peers, Grant is much respected for both his show and his PBP. They think hes pretty good.