The author is of the opinion that such an increase in overhead on top of the increase in overhead incurred by IPv6 in general over IPv4, makes the shim6 multihoming solution less attractive, so it's worthwhile to try and suppress the shim6 header where possible.
Has anyone looked at shim6/rohc interaction? Also, has anyone estimated what fraction of traffic would carry shim6 headers, on reasonable assumptions about the prevalence of multihoming events? Brian