I would disagree in this case, afaik the paper from 2006/09 from Menter and Langtry both states they want to extent it to a crossflow term but werent able to quite yet. They judge it as a really important parameter, and results show that when you have dominant crossflow it can transition way earlier when comparing to the older model. Fluent, CFX and StarCCM+ have it all implemented afaik.