Absolutely. Our extensions are Developer tools to speed up your use of Dreamweaver and to help you make websites for your clients faster and more efficiently. In the foreseeable future, there is no reason why we would restrict the Developer's Licensing on those.
The difference with the Solution Packs is that they are not intended as Developer Tools as much as quick solutions for anybody who wants an online store, or content management system, etc. The work has been done on those for you, so that you do not need to use our extensions, or Dreamweaver to produce something that complex for your clients.