Although wording within the recently passed Castle Doctrine would seem to suggest that "agencies" may not longer regulate firearms, to my knowledge there has been no proof of it. The PA DCNR was contacted and is not responding.
Another interesting consideration is that it is Section 6120 of Title 18 of the PA Consolidated Satutes that deals with pre-emption, but the new wording was not added to 6120, it was added to 6109, dealing with licensing. Seems odd, eh?
Safe answer: conceal-carry only, and with your LTCF.
Ballsy answer: OC with your LTCF and be prepared to be a test case, with lots of money in reserve and an attorney on stand-by.
Feel free to contact the DCNR yourself, as well as your PA State Rep for clarification. I think I may attempt a sit-down with mine in the coming weeks.
Hope this helps. Perhaps now you can see what is behind the controversy.
P.S... Interesting thread on this very topic... http://forum.pafoa.org/open-carry-14...ate-parks.html