Swimsuits are a sin in our potsmoking bucknekkid valhalla!
I have not commuted by boat to work per se, but it is a viable way of commuting for the northern islanders and in a few heavily urban areas. Rotterdam actually has watertaxi's which are faster to certain destinations then a cab. We do have a lot of river ferries for crossing's and we can always use the excuse "the bridge had to open" when we are late for anything.
Is your normal clothing made out of swimsuit material? Have you ever commuted to work via boat?