#Wikipedia and e-mailed with the developer and I learned several new things. The most relevant is that you can create a mobile main page. It then takes some arcane arts to configure this... it is not clear where to look for an how to.
Wiktionary is likely to benefit even more from a mobile interface. The type of information lends itself easily to be presented on a mobile phone. Given the process, it should even be easy to configure this.
I did update the information on translatewiki for Mobile MediaWiki.. With a reference to the "how to" for a configuration, it will be possible to make any MediaWiki installation mobile. That would make MediaWiki a lot more attractive.