Rather than telling us “clipping issues are preventing cloaks”, which I take to mean “because cloaks don’t work on charr, none of you can have them”, why not implement race-specific back pieces?
Humans could have cloaks. I’m not sure what the rest could have (fur/hides for norn?), but I’m sure ArenaNet could think of something aesthetically pleasing and racially appropriate for each of the races.