I think RM is edgy for those that are very keen to be 'edgy' really. The fact people knew which brand you meant based on nothing shows how ubiquitous they are really. Go to certain gentrified parts of London and they're practically uniform if you're middle class and a professional.
Some of the styles are nice, though a friend wears them religiously and they don't seem to wear that well. Obviously that is anecdotal, for all I know she wears them all day every day but they only ever really look good new and with styled up outfits. I'd have a look on Etsy if you like them and are happy with the price point though, lots of similar shoe makers doing handmade styles but not as samey.