my T has offered me hugs only in extreme circumstances, once when I left to go in to an eatiing disorder program ands once when she told me she had cancer. it was both wonderful and scary. the scary part was how much i wanted the hugs and how hard it was to let go.
From the other side, I am a ther.( strange but true) and I am very careful about how/when I touch clients. I usually ask first. but i do sometimes touch a client on the arm. i have only hugged a client three times in 20+ years.maybe I should do it more but it does feel risky