Quite the extensive resumes!
Only LISP here but I did introductory courses into Python and C#. I absolutely love programming, but owing to my ability level and natural aptitude it's not the most practical usage of my free time. If I can somehow squeeze out a couple extra hours of motivation per week I might go ahead and learn either Python or C#. The only reason I haven't dipped into Python is the absence of dialog boxes. It seemed very easy to learn for someone coming from LISP. C# had a much steeper learning curve.
Actually, it only has a steeper learning curve because you believe it to be.
Incrementalism is the key to writing any software .. that and a great reference guide for the built in functions. Everything else is simply learning the grammar and punctuation of the language.
You can be lost in stupid parenthesis or you can be caught up in a code block with an out of place curly brace. Either way, once you learn the grammar and punctuation, it's as simple as figuring out the various functions that you need to do the task at hand.
Remember, nothing ventured, nothing gained. Step out and you will be surprised how quickly you can learn it.