Yes to Speier, no to Puig! Back when Gammons wrote the first weekly notes column, a regular feature at the end always cited some interesting numbers from a crazed statistician named Chuck Something (I think).
As for personality, that's the ex-jocks department. If they have it, they stick: Remdog, Eck, Pedro si... Monty, Salty, Walker, Timlin I dunno. Wake, Gomes, maybe. Rice never liked the media, and for longest time after he joined it he never contributed any insight, but they like touting his HOF status. He has lightened up more in his old age, sharing barbs with colleagues.
Speier seems like a nice guy but it's obvious the reason they have him on is just to present the facts, ma'am. The White House would love him... or not (what happened to that poster?).