TL;DR
Thanks to Steven Henk Don
[http://www.shdon.com/blog/2011/06/24/magento-show-address-fields-in-account-creation-form]
true
Longer story
I talked a few days ago with Sascha from melovely.de [http://www.melovely.de]
about old, not more functional or "wrong" answers to "standard" magento
quest