On this subject, I have just committed a change to HEAD that resolves the problem. The actual solution is to allow templates to be specified optionally on each individual asset, so now the supplied example websites specify the "sectionpage1" template for all landing pages below root unless overridden lower down. The root landing page (root/index.html) has the homepage template specified on it as an override.
This should hit the next nightly build, and will be part of the 3.4.c release.