Is this true? I never cared much for this JFW as it sounds way too bloated and the custom theme that they're forcing on users looks ugly and would never be as good as the original XMB anyway, but it still sounded like an acceptable alternative when it seemed that nothing else in CFW advancement was on the horizon. Hopefully now after all that metldr exploit deal, after a while at least, we won't need this thing at all.
DemonHades said most .pkg files should install normally. Also IrisManager seems to be working perfectly, but I haven't tried it so don't take my work for it and yes you can install OFW after you've installed JFW (CFW) from the recovery menu.