I can see both profiles no problem, but I was under the impression I could only have one EA / Origin account for a particular email address - I certainly only seem to have one that I can actually log in to. Can you choose an alternative banner on both platforms? I can't, unless I'm missing something obvious, which is entirely possible.
You can only have one on each platform under a common e-mail address. For my second PS 3 account, I had to use a different e-mail address, and that one won't show up under my profile or if you search my ID, but a second account on the same platform has to have a unique User ID, anyway.
I meant that one e-mail address can have an account on all three platforms, and all three would be registered to that same e-mail address, with their respective N7HQ pages linked to that ID, if it's the same ID on all three platforms.
If you type "Jeremiah12LGeek" into N7HQ, and I have an account registered under that name to the same e-mail address on Origin, PS3, and Xbox 360, you will find all three N7HQ pages under that ID, depending on the platform you select for the search, and all three are registered to the same account here on BSN.
(For the record, I don't actually have a Mass Effect account under my Origin ID, so you wouldn't find that one in N7HQ, but I know that it is possible to register Mass Effect under my Origin ID, as I asked BioWare about it and had that confirmed.)