Great trip for a short outing. Usually quite ok with traffic, has everything from faster turns to tight twists.
Stops: If you want to stop somewhere, then I suggest at the top of Ibergeregg. Another option is to take a slight turn of this route and stop for lunch in Einsiedeln to look at the beautiful cathedral. Finally, Schwyz is a very pretty, quaint little town where you can park the bike and walk a few steps through the historic downtown.
Special Note: Take care in spring due to gravel and melting snow on the road on some sections. In summer, the higher alpine part around Ibergeregg may have a cow on the road once in a while.