Thanks to everyone who responded! The results:
Answers to Q1 ("Do you use Ruby in your 'day job'?"):
a ("Yes, Lots!"): 21 (30%)
b ("Some."): 16 (23%)
c ("I little bit when I can get away with it."): 23 (33%)
d ("I wish!"): 8 (11%)
The "d" tally includes one from a lua user who is happy not to use
ruby. I apologize for the biased wording.
As mentioned elsewhere, the showing for "a" is encouraging! If any of
you "a" people have openings in Dallas, please email me! 
Answers to Q2 ("What are your one or two principal programming
languages other than Ruby?"):
java: 23 (15%)
c: 19 (12%)
cpp: 15 (10%)
perl: 14 (9%)
php: 13 (8%)
python: 7 (4%)
bash: 7 (4%)
plsql: 5 (3%)
vb: 4 (2%)
csharp: 4 (2%)
sh, sql, and objc each got 3 mentions.
javascript, asp, matlab, delphi, rebol, tcl, lua, and lisp each got 2
mentions.
ksh, eiffel, forth, miva, sas, asm, ada, haskell, puredata, fortran,
tex, cobol, and vba each got 1 mention.