Good leaders are very few and far between. If you are not selling work, there is no meaningful advancement. The novelty of social engagement wears down, and you become an outsider to your org, office, and practice group.
You may realize, too late, that you wasted your time in your billable title, while doing the real leadership work that keeps people together and going strong. Be prepared to be let down by a failed recognition system that values people who can brag the most effectively. Eventually, you leave, disappointed in Slalom for not seeing your value and accomplishments. You leave disappointed in yourself for being fooled by a false corporate culture.
You will leave and see Slalom for the machine that it is; it takes talented people and makes them sales people, or marginalized experts, while chasing the elusive 50% margin to make the highest leaders extremely rich for doing nothing more than standing up a pyramid scheme.