I think the wording of Heller is significant in that the majority does not specifically limit this right to the home. I believe the phrase was "such as the home". IANAL but it seems to me that opens the door to challenging "may issue" in places like Maryland. What we need is someone of good standing to get denied a carry permit and file suit. If "keeping" and "bearing" are both protected as this court seems to have stated ( they do mention restrictions on sensitive locations ) we just need someone that has grounds to file!