Good advice from, dspeakes - I will steal some of your ideas.
I do a lot of banks and I have a very detailed spread sheet on whom I have seen, when, at which bank, his/her description and whether or not there was any sign of recognition if I have visited the banker before. Some bankers have a good recollection of people and faces, others not so much. I do not request automatic re-assignment from the banks I do because I use my own self-imposed rotation.
If a banker says "I've seen you before" or "welcome back" I normally don't deny that I have been there before. Instead I agree and say that one of these days you will get me to switch banks or I tell them I need some information for my sister-in-law who doesn't get around very well or the last time we discussed a travel card and now I have questions on overdraft protection, or whatever fits the visit. My suggestion is to look the banker in the eye and don't ever admit the real purpose of your visit.
Sometimes the banker really knows why you are there and is willing to play the game. You know - I know that you know that I know, etc. Love that scenario - he/she want to CYA and I want to get my shop done. After 10 minutes we are both happy.
I really don't like the ODP's as there only so many ways I can ask about this type of protection and use them as fillers only. I can really get into the combo shops.
Good idea on the clothing, dspeakes. Perhaps on my next round, I'll wear a mini-skirt with high heels and carry a pink purse. I have nice legs but do you think I should shave first (legs and face)? I dunno - maybe I'd be too memorable.