Problem extracting application from ZIP

Just found a subtle problem, where it seems like Archive Utility does the right thing and BetterZip doesn't. I've got an OSX application in a zip file (the OSX version of the game Gish, bought through the Humble Indie bundle deal here: http://www.wolfire.com/humble ). The zipfile contains only the application Gish.app. If I extract Gish.app by dragging it from the BetterZip window into my Applications folder and try to run it, it does nothing, and the system log shows this message:
com.apple.launchd[1015] ([0x0-0x6a26a2].Gish[15758]): posix_spawnp("/Applications/Games/Gish.app/Contents/MacOS/Gish", ...): Permission denied

If I extract the same file using Archive Utility, the app runs fine. It appears to be an issue with this particular zip file -- if I look at the Attribute column in BZ, it's blank for Gish.app. If I look at one of the other zipped games from the same deal, BZ shows a Unix attribute string of drwxr-xr- for the zipped .app, and those apps work just fine if extracted with BetterZip.

I think what's happening is that Archive Utility recognizes that the file attributes are missing in the zip when it extracts Gish.app, and sets them appropriately for an application. BZ just drops the file bundle as is, without setting any attributes because there aren't any in the zipfile. It might be nice if BZ recognized and fixed that sort of problem. I don't imagine it happens that often, but it's the sort of thing that causes headaches when it does.

On another note, any chance of adding a way to show details of how a file is encrypted in a zipfile, and other technical details? I can create an AES-encrypted zipfile just fine, and extract files from it with the password, but I can't find any way to actually show that the file is AES encrypted rather than PKZip2 password-encrypted. I imagine the details would vary for each file format, but it would be nice to either have another column in the display for this sort of technical info, or a popup window.

Besides those minor details, it's a wonderful app and I'm glad I found it. I originally just wanted something to let my wife easily create encrypted zipfiles for mailing documents to people, but it is indeed Better for just about everything. Thanks!