I use 7z exclusively, and I cannot find any convenient way to use it with Ark. The right click context menu's "Compress Here" option creates a .tgz. The other choices offered are .zip, .rar, and .tar.zip. I have to open another window via "Compress To..." to find 7z.
Is there any way to add 7z to the context menu, preferably as the "Compress Here" choice? This was possible with file-roller, but I can't find an option for it in Ark.