The 4-pin connector in itself shouldn't make a difference if the source isn't at least partially balanced. (Although I think a lot of folks like XLR connectors better for other reasons, like durability.) On the other hand, it certainly won't make anything sound worse, it just means that if you want to use those headphone and that cable with a single-ended source, you'll need an adapter.
Yeah, I'm getting it in part for style, but mostly for compatibility with better amps. I don't mind using my stock cable with a 1/4" adapter if/when I need it. There's a pretty decent chance I'll end up with a Jot, as I'm concerned the CTH won't play nice with both my CIEM's and HD 6XX, but I'll find out in a few weeks. Thanks!