I'm going to use both! ;)
1) To insert dynamic content within new meta tags in the HTML head.
then: ns_striphtml
2) To retrieve and display HTML source from i18n messages.
then ad_html_text_convert.
By the way, I think item 2. isn't the best approach to deal with templates to ad_proc [acs-mail-lite::send], is it?
Ex: acs-mail-lite::send ... -body [_ #evex-event.body_notf_lt]
How would I use the model/arch packages/custom-pkg/templates ?