Interesting. I've always read those sorts of PRCs as basically being "now that you've got all the effects of having the template, having paid for it's LA as part of the PRC, you now get the template keyword too." If you think about it, a template with LA is sorta like a PRC with LA levels - so the DD PRC is probably meant to spend LA levels giving you the template and 10-LA levels giving you other stuff too. I'll have to go back over the text, though I imagine a lot of GMs would say no to effectively getting the template twice (or 1 and a fraction, perhaps).