I'm using CiUI (http://clientside.cnet.com/cnet-js-standards/ciui-cnet- iphone-ui/) on a iPhone version of my site:
http://iphone.team-integra.net and it plays nice with jQuery for what i am using it for, which is: - Ajax calls - BlockUI - Show/Hide Not sure if that helps at all or not, but that iPhone framework seems to play nice with jQuery