Currently if you use an Owl to search for an item, you can hover over the "Can't Go" text to see what Room and Channel the person's store is in. However, you can't do this for the "Go" button, so if you're on the same channel as a store, you can't tell what FM they're in. This sucks if you're trying to jot down a list of say, the top 5 cheapest stores with some item. You can get around this by changing to a higher channel before Owl'ing, but it'd be nice if you didn't have to. My suggestion would be to add the Room and Channel info tooltip to the "Go" button on hover as well.
The best way around it is buyibg the owl and using it on a mule in a high channel, and in a seperate client. That way you can walk around the shops while still having the owl open