I'm a pretty new SS user (today), but normally I use professionally Joomla and Drupal.
Here in Europe (Italy for me) a typical business with SMI Companies and Local Public Organizations is "try&buy" site development, i.e. you prepare a prototype site, show its use to the customer and let him play for a while before signing/refusing the contract. Typically I don't have any phisical contact with the prospect until he/she call me for signing, nor I want to give a prospect access to my network. Luckily, for this kind of business we can use some Web Hosting Providers offering free web space (100-200 MB) with PHP5 support only (if you want MySql you have to sign a contract and to pay). With these features, I can use only CMSs working with flat files/SQLite and that can easily switch to MySql at any moment. Of course, if a site prepared with say XYZcms is accepted, that site will go on with XYZcms.
As of yesterday, after a couple of attempts with LaniusCMS, I was studying Xaraya for this job: but now that I've seen SilverStripe I feel the urgency to switch to it. Is there any possibility to have SS on SQLite?
Thank you in advance - pls accept my compliments for the excellent job