Is our custom to be maqpid about not covering the shel rosh?I ask because I've never been able to wear a hat in any non-ridiculous way without covering my t'fillin, and I read in the Ngarukh HaShshulchan yesterday (I know -- ah!! I was reading an Ashkenazi book!) that it's permissible af l'kkhatchilah to cover the shel rosh.