Software developer for thirty years as of 2012, using TCL in the Surpac product from Gemcom (recently acquired by Dassault Systèmes) where it is our scripting language exposed to customers and used widely. Entire add-on products have been written in TCL for Surpac, known as the Surpac Command Language (SCL).
More known for my work in cross-platform object-oriented frameworks including the OOFILE family of database, forms and reporting frameworks for C++.
My long enthusiasm for constructive languages such as Forth and Scheme was a natural lead-in to using TCL.
E-mail me privately at dent at oofile dot com dot au