My mid crossbar on the main Halo is just a tad below the top-back of the Bostrum seats, so those jeep versions should clear the top main Halo bar with no problem. Those jeep versions are a nice breed of both old school and new age seating.
Yeah, I have one of those TIME OUT chairs here also. Just trying to figure out how to make it an ET NO/TIME chair for my car. I'll have to paint 'em black so they'll be stealth LOL.