Won't have my usual fins for upcoming dive trip- rather than quickly run out and buy another set of fins ( I am looking at a few diff models) I was thinking I'd just use theirs: they tell me they have SEAC open heel fins; anyone ever use these? For me, any fin will be fine for a week, but I am just curious: (I assume the foot pocket will hold most any firm soled booty)/ actually looking forward to not having to pack my fins for the trip! Thanks