I'd be curious to know how either the mini-clips or power straps work with sandals. I have an old Schwinn rigid mtb that my parents wanted to get rid of that I am planning to refurbish a bit and turn into a "riding into town" bike (this is different than a commute bike because my commute bike is actually fairly nice and I don't feel comfortable riding it into town and locking it up downtown for a few hours while I shop, have lunch, etc -- the idea is that my "riding into town" bike will not be attractive to thieves. And it will be sluggish enough that I won't feel compelled to wear bike clothes and bike shoes and get sweaty ).

It has flat pedals on it right now and I definitely want to keep the option of wearing regular shoes, but I'd like something that grips my foot a little bit, and ideally I would love to be able to wear non-athletic, non-grippy shoes with no toe protection (flip flops, flat leather-soled sandals, etc).

Suggestions welcomed...