Using Traditional Scheduler on non-formal projects no longer supported/advised?

In the past (RTC 3) it was possible, and specifically mentioned, that the Traditional Scheduler could be added to a non-formal based process later:

http://pic.dhe.ibm.com/infocenter/clmhelp/v3r0/index.jsp?topic=/com.ibm.team.platform.doc/topics/t_customize_template_formal_features.html

But with version 4, the number of features that can be adopted, has decreased, and the Traditional Scheduler is no longer mentioned:
http://pic.dhe.ibm.com/infocenter/clmhelp/v4r0/index.jsp?topic=%2Fcom.ibm.jazz.platform.doc%2Ftopics%2Fc_formal_template_customization.html

Personally I was never in favor of doing this anyway (just make sure you pick the right basis;-), but I have a couple of projects still requesting this.
Can I conclude that this is no longer advisable, or supported?

Thanks
Ron