You old-timers are silly sometimes - roller bridges won't work on carved tops not because of the added height requirement, but because they require a large flat mounting surface (parallel to the strings) which just does not exist.
Also, though a break angle is nice on an archtop instrument, it is hardly necessary (just makes setups easier... but also increases the bridge height requirement... see previous point). He could go with a carved top here if he wanted to (and doesn't have issue with the 3 point, or some other post-mounted bridge).