I use non-steerable tailwheels on my two 1/8 scale Fokker E.Vs. They are a bear to take off and land otherwise. The nonsteering aspect is fine, with a little speed the rudder action is usually sufficient. On the other hand, I don't taxi around a lot, just set the plane on the runway in the right direction and go.
On the Camel (1/6th scale VK kit) I am building now, I will use a tailwheel on asphalt but remove for grass or dirt. See the pix.
Allan