Wikipedia Offline App with in-page search iPhone

The title pretty much says it all. Ive carefully searched the App Store for an iPhone App that would allow access the entire database of Wikipedia in offline mode. Ive found three apps that meet those requirements: Encyclopedia, AllofWiki and Wikipedia Offline.
The thing is Im an inveterate in-page search junkie and, although this does seem to be an ubiquitous functionality among online Wikipedia apps (like WikiLookup), I havent been able to confirm if any of the three offline apps mentioned above support in-page search. Would very much appreciate if someone could shed some light on this.
Thanks in advance.
iPhone iOS 4