I wonder which one? Did he more often call downstairs in the 'dancers dance' section. In which case it's of love him (for his erudition) or loathe him (for rudeness). We avoid him mostly. But all the other 'downstairs' callers have the amazing ability of coping with varying levels of dancer knowledge and keeping everyone happy.
I really envy that, I find it easy enough to call a beginners programme, or a club programme for experienced dancers - both at once is a challenge.