It's a polyglot world for IAC, and even standing before both tools in their current state I can imagine other axes of consideration that might rank as highly as

It's a polyglot world for IAC, and even standing before both tools in their current state I can imagine other axes of consideration that might rank as highly as the specific characteristics of the language. In our case we adopted TF several years back and being able to use a different language probably isn't going to be enough benefit to justify migrating all our things. I think in many cases people will adopt the tool that gives them the most confidence that it will do what they need, and deal with whatever language it uses.