I played around with ST now for a few months. I'm using it together with Cordova (mainly on android).
When building native apps (regardless if I'm using the sencha packager or cordova), I experienced a recognizable difference regarding performance between packed apps (= running with webview on android) and browsers like chrome (on android).
I read a lot about that topic and as it seems there is not much one can do to fasten that up... the app appears a bit unresponsive if scrolling a lot.
How are your experiences with native ST apps? Do you have performance impacts as well? Are you ok with this drawback, what is the opinion of your customers / users (if any)? Or do you use ST mainly for mobile websites and not using it for apps at all?