I it usual to get turned down if your bringing your own legit licenses with you? My last place had no problem with it. I mean uvlayout runs off a dongle, you cant really get more legit :)
Game dev is not kinda that home or really big on a mac so tools are more spare to choose from or simply not existent until you start a virtual machine with windows. Also UVlayout from headus is available for Linux - just not for the mac. The first tool that comes to mind is Blender with its ABF and LSCM algorithms its not…