Oil through pushrods on an LA

I saw a thread a while back regarding this subject and now I cant find it.

Is there any harm in running oil through pushrods on an LA engine with factory style lifters and rockers? If I remember right the consensus was that there would be no issue in doing this. The only reason I ask is I need shorter pushrods. The length I need is the same as a common LS1 pushrod. These are readily available and really cheap.