Ask how a practice separates your personal brand from the company's, so each can stand on its own if the other changes. A good fit shows how founder visibility supports hiring, fundraising, and sales without promising press it cannot earn.
The directory has three vetted practices that list entrepreneurs among the clients they serve: Mashman Consulting Group, Kathryn Holeton, and Orchard Strategy. They are based in Knoxville, TN, Little Rock, AR, and Taipei City, Taiwan, and they are two independent consultants and one consultancy.
As for how they work, one offers done-for-you work, where the practice does the work; two offer done-with-you work, where the client works alongside the practice. Of these, two work with clients remotely anywhere and one works both remotely and in person. By time zone, the practices keep US Eastern and US Central hours. Between them they work in English and Mandarin. On the PBA scale they span price tiers $$ to $$$$ (what the tiers mean).