I used Bailey's chocolate cream liqueur and did not find it overpowering either. The chocolate and tequila were balanced, but nothing too exciting. Good base though to experiment with to increase the chocolate cream liqueur based cocktail repertoire.
Maybe my choice of chocolate cream liqueur - Cornish Lust, or Cornish Dream, whichever their chocolate flavour is - makes it different to Mr. Szczupal. There's a nice agave flavour behind the chocolate cream, albeit subtle.
It is very one-dimensional. It's very monotonous. It lacks something to break the egemony of the Mozart which is overpowering to the point of being bored quickly.