I've been wearing Keen closed back clogs for a while. My orthotics fit and they have a non-slip, non-marking sole.
They are also lighter than the Dansko clogs and bend a lot more.
They started out a little tight across the instep as I have a high arch, but I sprayed them until very damp with a 50-50 alcohol/water mix and wore them with thick hiking socks until dry.
Now they fit and feel like slippers and I can work a full day on my feet without crying at the end of the day.