Yes, it would be a sound tactical reason. But that doesn't mean that it's why Basch is doing it, and Ravus knows that.

"Yes, I would hate to delay you on your march to return me to those who slaughtered my mother," Ravus grumbles as he braces his whole right arm against Basch's offered one to step up into the carriage. "It would be horrible of me to consider doing so, would it not?"