Hi,
Not really, no. I think the best thing you could do to get people looking at listings under both your accounts would be to manually put a copy of your other account's store window into your description. If you go to the store window settings pages, there's one called 'Store Window HTML' that useful for things like this. Just copy what's in there for one account, go to the other and create a detail profile with that HTML in the description. When you post it you'll have a copy of both in each listing.
Joe