There's over 250 agents in my company, and to be honest I don't even know most of their names, so I sure wouldn't know if they do BPO's. There are 2 other agents in my office who do BPO's and I know I've done the same BPO as both of them, but have never had a problem - they have both done 2nd opinion BPO's on my listings, and have never had a problem. As long as you keep ethics in mind, and don't copy their BPO or tell them what price you came up with or what comps you used, I really don't think it's too big of a deal. That's just my 2 cents.
I have also never had to leave copies at my office. One of the other BPO agents in my office had brought up the idea that we should keep copies at the office 'for reference' but I didn't agree, I didn't want the others to have access to my reports, or my BPO contacts.
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If there was a better way to go then it would find me
I can't help it, the road just rolls out behind me