Is this a strategically poor move? Holds are unlike saves in that multiple relievers can get them in a game. So how much of a disadvantage would I have if both of my holds guys were from the same team. Obviously if the team lost, I would have no chance of getting a hold for that evening if I only had two, but if the team was good, then this might not be that bad of an arrangement, right?
I'm of limited knowledge on saves, but IIRC, our resident holds 'expert' GoToWarMissAgnes has said that two pitchers on the same team should not have an adverse effect on each others' hold totals. I believe the debate was last season when Scott Eyre and Bobby Howry were both on the Cubs, and people were wondering in pre-season about them each losing value due to one another.
In short, I'd look at it about the same as I would if the two pitchers were on different teams. How good they are is the main contributing factor.
It really depends on a few factors, the most obvious of which is the skill of the pitcher.
Beyond that, be aware of the manager's tendencies and target guys who get used in a consistent fashion.
Last season I had both Zumaya and Rodney, and it worked out pretty well.
Back in the day when Houston went Lidge-Dotel-Wagner (very often and very effectively), that may have been the best dual-setup situation in fantasy history.
I don't think there's much of a problem with picking guys on the same team. However, in general, middle relief guys who pitch the 8th inning get more holds than middle relief guys who pitch the 7th (Justin Speier is the only exception off the top of my head). If you have two middle relief guys on the same team, chances are that only one of them is pitching the 8th.
Also, I see it written here, and I've seen it written before that holds guys come from teams that win A LOT. I'm sorry, but that's just not true. The league leader in holds thus far is Matt Capps. Tied for second is Manual Corpas (on last place Colorado), Brandon Lyon (on fourth place Arizona), Mike MacDougal (on fourth place Chicago), Hideki Okajima (ok, first), Jon Rauch (Washington, 'nuff said), Speier and Turnbow.
Getting a hold is all about first, manager trust, and second, good skill set, and third, right opportunity. I'd focus on the first and second part by zeroing in on the best quality relievers, regardless of the team they play on. They are the ones who are going to be asked to shut down the opposing team during a late, tight pre-9th inning game.