A relevant thread from Wilmott Forums:
http://www.wilmott.com/messageview.cfm?catid=16&threadid...In particular, this quote from Dominic Connor is telling:
"...[snip]... As Zmei says [SLang] a GS only language, which even within GS is not exactly universally loved. I hear tales of tragically poor performance, and the inability to cope with modern programming. Think of it as a equivalent to C# 1.0, ie old fashioned.
I don't know how much it is seen as protecting IP, but it is not clear how GS can give it up within the next decade even if they tried. There is just so much of it there.
There are spots of Java, VBA, and C++ in GS, who often value C++ experience in new hires, even if they don't use it.
The GS IT bonus pool is better than most people's IT bonus pool, but it's several tiers down.
Mobility is no worse at GS than many other firms, but that is not saying much of course.
Slang does in this context work to your advantage. Many IT department technologies have no value in quant and/or front office roles, but since Slang is prevalent in all aspects of GS, this barrier is much smaller.
But of course the politics in all banks is far more of a problem than the technology."
Dominic is a very well known Quant head hunter. Well informed and generally well liked within the community. I'd wager that they don't want to use Slang in the spinoff simply because they have a change to do a reset and don't want the baggage.