Knuth, in his book, memorably decreed a pronunciation (and case mixing in the written form) for TeX, with a hard /ch/ at the end (literally, "your monitor should become slightly moist"), backed by a clever and erudite rationale involving the etymology of words like technique.
Leslie Lamport, in his book on LaTeX, decreed a case mixing, but (as you say) ok'd any reasonable pronunciation.
Leslie Lamport, in his book on LaTeX, decreed a case mixing, but (as you say) ok'd any reasonable pronunciation.